CHAPTER 40
BOATING SPEED AND DISTANCE ZONING
[Prior to 12/31/86, Conservation Commission[290] Ch 30]
571—40.1(462A) Restricted areas. All vessels, except authorized emergency vessels, shall be operated in compliance with, and all persons engaged in water recreation activities, shall obey restrictions with posted areas marked with a uniform waterway buoy or official signs adopted by the natural resource commission.
571—40.2(462A) Uniform buoy system. All buoys placed shall be those of the uniform waterway marking system adopted by the natural resource commission and shall be constructed, placed, and maintained in accordance with Iowa Code chapter 462A and Iowa Administrative Code 571—Chapters 40 and 41.
571—40.3(462A) Commission approval. The placement of buoys or official signs that restrict speed and distance or involve special zoning restrictions shall be approved by the natural resource commission.
571—40.4(462A) Right for aggrieved party to appeal. Any finding or establishment of areas involving special speed and distance or zoning restrictions by the natural resource commission may be appealed by aggrieved party upon written notice. A hearing thereon shall be held by the natural resource commission within 30 days thereafter.
571—40.5(462A) Rathbun Lake, Appanoose County—zoned areas.
	40.5(1) Areas may be specifically designated for swimming and wading.
	40.5(2) Areas may be designated restricted speed areas.
571—40.6(462A) Red Rock Lake, Marion County—zoned areas.
	40.6(1) Areas may be specifically designated for swimming and wading.
	40.6(2) Areas may be designated restricted speed areas.
	40.6(3) Areas may be designated as “no anchoring” areas.
571—40.7(462A) Coralville Lake, Johnson County—zoned areas.
	40.7(1) Areas may be specifically designated for swimming and wading.
	40.7(2) Areas may be designated restricted speed areas.
571—40.8(462A) Saylorville Lake, Polk County—zoned areas.
	40.8(1) Areas may be specifically designated for swimming and wading.
	40.8(2) Areas may be designated restricted speed areas.
571—40.9(462A) Lake Odessa in Louisa County.
	40.9(1) Areas may be designated restricted speed areas.
	40.9(2) All motorboats, except authorized emergency vessels, shall be operated at a speed not greater than 5 miles per hour year around, on that portion of Lake Odessa known as the Sand Run Chute, lying south of the main lake to a point 100 yards south of the Sand Run Chute boat ramp.
	40.9(3) All motorboats, except authorized emergency vessels, shall be operated at a speed not greater than 5 miles per hour year around, on those portions of Lake Odessa known as the lateral ditch, between the main lake and Bebee Pond, and on the channel between Yankee Chute and Beaver Pond.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.10(462A) Mississippi River lock and dam safety zone. A safety zone is hereby established in Iowa waters above and below all navigation lock and dam structures on the Mississippi River between the Iowa-Minnesota border and the Iowa-Missouri border. The established zone shall be 600 feet upstream and 150 feet downstream from the roller gate or tainter gate section of the structure.
	40.10(1) The safety zone does not include the area directly above and below the navigation lock structure.
	40.10(2) The safety zone does not include the area directly above and below the solid fill portion of the dam and structure.
	40.10(3) The safety zone shall be recognized by the state of Iowa only when plainly marked as follows:
	a. 	Upstream signs worded—Restricted area keep 600 feet from dam.
	b. 	Downstream signs worded—Restricted area keep 150 feet from dam.
	c. 	Flashing red lights will be used to make the outer limits of the restricted areas.
	40.10(4) No boat or vessel of any type, except authorized vessels, shall enter the established safety zones recognized by the state of Iowa as described in this rule.
571—40.11(462A) Joyce Slough Area. The Joyce Slough Area, a portion of the Mississippi River within the city of Clinton, Iowa, is hereby zoned to be a harbor area and vessels traveling therein shall not travel at speeds in excess of five miles per hour.
571—40.12(462A) Swan Slough, Camanche, Iowa. A restricted speed zone of not greater than 5 miles per hour is hereby established in all or part of the main channel of Swan Slough (Mississippi River mile 510.2 to 511.3), Camanche, Iowa, as designated by buoys.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.13(462A) Massey Slough. The operation of vessels in Massey Slough of the Mississippi River at Massey Station, Dubuque County, Iowa, extending from a northerly to southerly direction from the upper end to the lower end of the slough, encompassing the water in Section 14, Township 88N, Range 3E of the 5th P.M., tract number NFIA-26M, is restricted as follows:
	40.13(1) All boats underway must maintain a speed of less than five miles per hour in said waters.
	40.13(2) Reserved.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.14(462A) Black Hawk County waters. Operation of vessels in Black Hawk County on the Cedar River and any connected backwaters shall be governed by this departmental rule as well as all applicable state laws and regulations.
	40.14(1) No vessel, except authorized emergency vessels, shall be operated in marked areas at a speed greater than the limit designated by buoys, signs, or other approved uniform waterway marking devices marking the area.
	40.14(2) All vessels, except authorized emergency vessels, shall be operated at a speed not greater than 5 miles per hour when within 600 feet of the Franklin Street bridge. This 600-foot zone shall be designated by buoys, signs, or other approved uniform waterway marking devices.
	40.14(3) No vessel shall tow skiers, surfboard riders, or other towable devices within the zone established by 40.14(2).
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.15(462A) Mitchell County waters. Operation of vessels in Mitchell County is restricted to speeds not greater than 5 miles per hour where a speed zone is designated by buoys on the following impounded waters:
Cedar River from Mitchell Dam, thence upriver to the County “S” bridge.
Cedar River from the St.	Ansgar Mill Dam, thence upriver to the Newberg Bridge crossing Highway 105.
Cedar River from the Otranto Dam upriver to the Great Western Railway Bridge crossing the Cedar River.
The Stacyville Pool, on the Little Cedar River at Stacyville, Iowa.
	40.15(1) Water recreation activities as restricted within posted areas which are marked with approved buoys shall be obeyed.
	40.15(2) Reserved.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.16(462A) Maquoketa River. Operation of vessels of the impoundment of the Maquoketa River in Delaware County, Iowa, extending westerly and northerly from the line between Sections 29 and 30 in Delhi Township in said county, to the line between Sections 10 and 15 in Milo Township in said county which impoundment is sometimes known and referred to as Hartwick Lake or Lake Delhi.
	40.16(1) Water recreation activity restrictions shall be obeyed, including restrictions within posted areas which are marked with approved buoys.
	40.16(2) No motorboat shall be operated at speeds greater than ten miles per hour at any time between the hours from one hour after sunset to one hour before sunrise.
571—40.17(462A) Zoning of off-channel waters of the Wapsipinicon River in Pinicon Ridge Park in Linn County. No motorboat shall be operated at a speed greater than 5 miles per hour within the zoned area designated by regulatory buoys or signs on the off-channel waters of the Wapsipinicon River above the dam at Central City, Linn County, Iowa.
The zoned area will be the off-channel waters created in and adjacent to the developed recreation areas of the Pinicon Ridge Park on the west and south bank of the Wapsipinicon River above the dam at Central City, Linn County.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.18(462A) Speed restrictions on Lake Manawa. No motorboat shall be operated at a speed greater than five miles per hour within the zoned areas 300 feet from shore around Lake Manawa in Pottawattamie County.
571—40.19(462A) Zoning of Little Wall Lake. No motorboat shall be operated at a speed greater than 5 miles per hour within the zoned area designated by regulatory buoys on Little Wall Lake in Hamilton County.
The zoned area will not exceed approximately 20 acres in the northeast portion of the lake identified by a line from a point on the high-water mark approximately 296.6 feet west of the southeast corner of the southwest quarter of Section 10, Township 86 North, Range 24 West; thence northwest to the high-water mark which is 775 feet south and 319 feet west of the northeast corner of the northwest quarter of the southwest quarter of Section 10, Township 86 North, Range 24 West.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.20(462A) Lake Icaria, Adams County—watercraft use. Motorboats of outboard or inboard-outdrive type shall be permitted on Lake Icaria. The following rules shall govern vessel operation on Lake Icaria in Adams County.
	40.20(1) All vessels shall be operated at a speed not greater than 5 miles per hour when within 50 feet of another vessel which is not underway or is operating at a no-wake speed.
	40.20(2) Zoned areas.
	a. 	No vessel, except authorized emergency vessels, shall be permitted in areas specifically designated for swimming and wading which are plainly marked by the use of buoys or signs in accordance with 571—Chapter 41.
	b. 	No motorboats, except authorized emergency vessels, shall be operated in marked bay areas at a speed greater than the limit designated by buoys or signs marking said bay. Said buoys or signs shall be in accordance with 571—Chapter 41.
	c. 	No motorboats, except authorized emergency vessels, shall be operated in restricted speed areas between the nearest shore and a line designated by uniform marker buoys or signs at a speed greater than the limit designated on the buoys or signs marking the area. Such zoned areas shall be not less than 50 feet nor more than 400 feet from shore. Said buoys or signs shall be in accordance with 571—Chapter 41.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.21(462A) Zoning of the Des Moines River. Vessel operation on the Des Moines River from its confluence with the Mississippi River in Lee County to the northerly meander lines of both the East and West Branches, shall be governed by this departmental rule as well as all applicable state laws and regulations.
	40.21(1) No vessel, except authorized emergency vessels, shall be operated in marked areas at a speed greater than the limit designated by buoys marking said areas.
	40.21(2) No vessel, except authorized emergency vessels, shall be permitted in areas specifically designated for swimming and wading which are plainly marked by the use of buoys.
571—40.22(462A) Upper Gar Lake, Dickinson County. Operation of vessels on Upper Gar Lake is restricted to a speed not greater than 5 miles per hour between the Henshaw Bridge at the north end of Upper Gar and south end of East Lake and the Old Sawmill Bridge at the south end of Upper Gar and the north end of Minnewashta.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.23(462A) Zoning of the Mississippi River, Guttenberg river mile 616, Clayton County.
	40.23(1) All vessels operated between the ice dike and Bussey Lake access shall be operated at a speed not greater than 5 miles per hour.
	40.23(2) The city will designate the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.24(462A) Mt. Ayr City Lake (Loch Ayr). A motorboat shall not be operated within 100 feet of shore at a speed greater than 5 miles per hour.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.25(462A) Iowa River in Iowa City, Johnson County. No person shall operate any vessel towing persons on water skis, surfboards, or similar devices on the Iowa River in the area bounded by the Coralville Mill Dam and the Burlington Street Dam, except during regattas, races, marine parades, tournaments, or exhibitions authorized by the natural resource commission to be held in such area.
571—40.26(462A) Zoning of the Mississippi River, Dubuque, Dubuque County.
	40.26(1) All vessels shall be limited to no more than five miles per hour in Lake Peosta Cut south and east of the Hawthorn Street municipal boat launching ramp.
	40.26(2) A restricted speed zone of no more than 5 miles per hour is established in the vicinity of Chaplain Schmitt Memorial Island in proximity to the Schmitt Island municipal launching ramp and in waters adjacent to the southerly shoreline in the area of the Dubuque Yacht Basin.
	40.26(3) A restricted speed zone of five miles per hour for the northern portion of Shawondassee Slough. Marker buoys shall be placed at a point approximately 750 feet upstream from the existing speed zone.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.27(462A) Zoning Harpers Slough, Harpers Ferry, Allamakee County.
	40.27(1) All vessels operated in Harpers Slough between a point 200 feet above the state ramp and 200 feet out from the west shore and extending 550 feet downstream from a point known as Sandy Point Road Dead-End shall operate at a speed not greater than 5 miles per hour.
	40.27(2) The city of Harpers Ferry will designate the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10; ARC 0111C, IAB 5/2/12, effective 4/13/12]
571—40.28(462A) Black Hawk Lake, Sac County—zoned areas.
	40.28(1) No motorboat shall be operated at a speed greater than 5 miles per hour within the zoned area marked by the regulatory buoys. The zoned area shall be the area commonly known as Town Bay on the northwest corner of Black Hawk Lake in Sac County.
	40.28(2) Areas may be specifically designated for swimming by the use of regulatory buoys.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.29(462A) Speed and other restrictions on Brown’s Lake, Woodbury County. All vessels shall be operated at a speed not greater than 5 miles per hour within the two zoned areas designated by regulatory buoys or other approved uniform waterway markers.
	40.29(1) Zone 1. Zone 1 shall extend 570 yards from the boat ramp east to the regulatory buoys and 150 yards west from the boat ramp.
	40.29(2) Zone 2. Zone 2 shall begin at the regulatory buoys located at the 24-inch steel pipe and shall extend west.
	40.29(3) Swimming. Areas may be specifically designated for swimming by the use of regulatory buoys.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.30(462A) Speed and other restrictions on Snyder Bend Lake, Woodbury County. All vessels shall be operated at a speed not greater than 5 miles per hour within the zoned area 400 yards from the boat ramp south to the regulatory sign and buoys.
Areas may be specifically designated for swimming by the use of regulatory buoys.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.31(462A) Speed restrictions on East Okoboji and West Okoboji Lakes in Dickinson County. No motorboat shall be operated at a speed greater than 5 miles per hour within the three zoned areas designated by regulatory buoys on East Okoboji and West Okoboji Lakes in Dickinson County.
	40.31(1) Zone 1. Zone 1 shall be a line from the east side of Givens Point to the south end of Arnolds Park City Beach on West Okoboji. Also, a line 150 yards east from the north end of the railroad trestle bridge at Clair Wilson State Park south to the shoreline of East Okoboji.
	40.31(2) Zone 2. Zone 2 shall be the area which is 300 feet north of the area commonly known as the Narrows on East Okoboji and 200 feet south of the area commonly known as the Narrows on East Okoboji.
	40.31(3) Zone 3. Zone 3 shall be the area 50 feet east of the bridge between East Okoboji and Upper Gar on the East Okoboji side running in a northwesterly direction toward the end of the island from Gingles Point then west toward the shoreline.
	40.31(4) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.31(5) The following areas are zoned 5 miles per hour on West Okoboji.
	a. 	Zone 1. Zone 1 shall be the area commonly known as Okoboji Harbor at the northwest corner of West Okoboji.
	b. 	Zone 2. Zone 2 shall be the area commonly known as the canals in the city of Wahpeton including Turtle Lake.
	c. 	Zone 3. Zone 3 shall be the area commonly known as Lazy Lagoon located in the Triboji Area on West Okoboji.
	d. 	Zone 4. Zone 4 shall be the area commonly known as Little Millers Bay. The zone shall start at Pinkies Point and extend southeasterly (160 degrees) approximately 370 yards until bisecting the southern shoreline of Little Millers Bay.
	e. 	Zone 5. Zone 5 shall be the area commonly known as Little Emmerson Bay. The zone shall start at Breezy Point and extend southwesterly (235 degrees) approximately 330 yards until bisecting the west shoreline of Little Emmerson Bay.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.32(462A) Spirit Lake, Dickinson County—zoned areas.
	40.32(1) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.32(2) The following areas are zoned 5 miles per hour on Spirit Lake, Dickinson County:
	a. 	Zone 1 shall be the area commonly known as Templar Park Lagoon located midlake on the west shore of Spirit Lake.
	b. 	Reserved.
571—40.33(462A) Speed restrictions on the Mississippi River, Jackson County, at Spruce Creek County Park. No motorboat shall operate at a speed to exceed 5 miles per hour within the area designated by buoys or other approved uniform waterway markers, beginning at the entrance of Spruce Creek harbor and extending southeast 550 feet and extending east 150 feet from shore. The Jackson County conservation board will designate the speed zone with uniform waterway markers (buoys) approved by the natural resource commission.
571—40.34(462A) Speed restrictions on the Mississippi River, Jackson County, at the city of Sabula. No motorboat shall operate at a speed to exceed five miles per hour within the four zoned areas designated by buoys or other approved uniform waterway markers.
	40.34(1) Zone 1. Zone 1 shall extend 200 feet from shore and begin at a point 250 feet upstream of the north Sabula city boat ramp and ending at a point downstream where Bank Street intersects the river bank.
	40.34(2) Zone 2. Zone 2 shall extend 200 feet from shore and extend 100 feet upstream and 100 feet downstream from the entrance to the Island City Harbor.
	40.34(3) Zone 3. Zone 3 shall extend 200 feet into South Sabula Lake from the county boat ramp and 100 feet to the west of the ramp and 600 feet to the east of the ramp.
	40.34(4) Zone 4. Zone 4 shall extend 200 feet in all directions beginning at the center of the “cut” into Lower Sabula Lake.
The city of Sabula shall designate the speed zones with uniform waterway markers (buoys) approved by the natural resource commission.
571—40.35(462A) Speed restrictions on the Greene Impoundment of the Shell Rock River. No motorboat shall be operated at a speed exceeding five miles per hour in the two zoned areas of the Greene Impoundment designated by buoys or other approved uniform waterway markers. The first zoned area extends from the dam in the city of Greene, upstream approximately one-quarter mile to the north boundary of the city park in which the lower boat ramp is located. The second zoned area extends from the county bridge over the Shell Rock River on the north side of section 28 of Union Township in Floyd County, downstream approximately one-quarter mile to the south boundary of Gates Bridge County Park. The city of Greene and Floyd County shall designate their respective speed zones with uniform waterway markers (buoys) approved by the natural resource commission.
571—40.36(462A) Zoning of the Iowa River, Iowa Falls, Hardin County.
	40.36(1) All vessels operated in a designated zone between the River Street Bridge and the dock at Dougan’s Landing shall be operated at a speed not greater than 5 miles per hour.
	40.36(2) The city of Iowa Falls shall designate and maintain the 5-mile-per-hour speed zone with marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.37(462A) Zoning of Crystal Lake. No motorboat shall be operated at a speed greater than 5 miles per hour within the 25-acre zoned area designated by regulatory buoys on Crystal Lake in Hancock County.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.38(462A) Five Island Lake, Palo Alto County.
	40.38(1) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.38(2) Reserved.
571—40.39(462A) Lost Island Lake, Palo Alto and Clay Counties.
	40.39(1) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.39(2) Reserved.
571—40.40(462A) Ingham Lake, Emmet County.
	40.40(1) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.40(2) Reserved.
571—40.41(462A) Storm Lake, Buena Vista County.
	40.41(1) Areas may be specifically designated for swimming by the use of regulatory buoys.
	40.41(2) Reserved.
571—40.42(462A) Raccoon River Regional Park Lake, Polk County.
	40.42(1) All vessels shall be operated at a speed not greater than 5 miles per hour.
	40.42(2) A 40-acre body of water located in the southeast corner, and separate from the main lake, shall be designated for nonmotorized and electric motors only. The city of West Des Moines will designate the area with regulatory buoys and signs.
	40.42(3) Areas may be specifically designated for swimming by the use of regulatory buoys.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.43(462A) Zoning of the Mississippi River, Bellevue, Jackson County.
	40.43(1) All vessels shall be operated at a speed not greater than 5 miles per hour within the area designated by buoys or other approved uniform waterway markers beginning at the mouth of Mill Creek and extending upstream 900 feet, and extending 200 feet perpendicular from shore. The area shall be designated by a minimum of four approved buoys to be uniformly placed along the 900-foot length of the zone parallel to the shore.
	40.43(2) The city of Bellevue will designate the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.44(462A) Three Mile Lake, Union County—watercraft use. Motorboats of outboard or inboard-outdrive type shall be permitted on Three Mile Lake. The following rules shall govern vessel operation on Three Mile Lake in Union County.
	40.44(1) All vessels shall be operated at a speed not greater than 5 miles per hour when within 50 feet of another vessel which is not underway or is operating at a speed not greater than 5 miles per hour.
	40.44(2) Zoned areas.
	a. 	No vessel, except authorized emergency vessels, shall be permitted in areas specifically designated for swimming and wading which are plainly marked by use of regulatory buoys in accordance with Iowa Administrative Code 571—Chapter 41. The Union County conservation board shall designate and maintain a swimming area(s) by the use of regulatory buoys approved by the natural resource commission.
	b. 	No motorboats, except authorized emergency vessels, shall be operated in marked bay areas at a speed greater than the limit designated by buoys or signs marking said bay. No motorboats, except authorized emergency vessels, shall be operated other than at a speed not greater than 5 miles per hour above a line of buoys placed across the lake at the point where County Road H33 intersects the lake. All buoys or signs shall be in accordance with 571—Chapter 41.
	c. 	No motorboats, except authorized emergency vessels, shall be operated in restricted speed areas between the nearest shore and a line designated by regulatory buoys or signs at a speed greater than the limit designated on the buoys or signs marking the area. Such zoned areas shall be not less than 50 feet nor more than 400 feet from shore. Said buoys or signs shall be in accordance with 571—Chapter 41.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.45(462A) Zoning of the Cedar River.
	40.45(1) Nashua, Chickasaw County. All vessels operated in a designated zone extending east 150 feet from the intersection of Wabash Street and Charles City Road and north 380 feet shall be operated at a speed not greater than 5 miles per hour. The city of Nashua shall designate and maintain the 5-mile-per-hour speed zone with marker buoys approved by the natural resource commission.
	40.45(2) Nashua, Chickasaw County. All vessels operated in a designated zone extending north 131 feet from the intersection of Wabash Street and the north entrance to Cedar View Circle and east 80 feet and west 80 feet from this point along the shoreline and extending 110 feet north into the lake shall be operated at a speed not greater than 5 miles per hour. The city of Nashua shall designate and maintain the 5-mile-per-hour speed zone with marker buoys approved by the natural resource commission.
	40.45(3) Charles City, Floyd County. All vessels operated in a designated zone extending 300 feet upstream from the upper dam shall be operated at a speed not greater than five miles per hour. The city of Charles City shall designate and maintain the five miles per hour speed zone with marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.46(462A) Zoning of Carter Lake, Pottawattamie County.
	40.46(1) All vessels operated in a designated zone known as Shoal Pointe Canal shall be operated at a speed not greater than 5 miles per hour.
	40.46(2) The city of Carter Lake shall designate and maintain the 5-mile-per-hour speed zone with marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.47(462A) Zoning of the Mississippi River, McGregor, Clayton County.
	40.47(1) All vessels, except commercial barge traffic, shall be operated at a speed not greater than 5 miles per hour within the area of river mile markers 634 and 633.4 and designated by buoys or other approved uniform waterway markers.
	40.47(2) The city of McGregor will designate the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.48(462A) Zoning of the Mississippi River, Marquette, Clayton County.
	40.48(1) All vessels, except commercial barge traffic, shall be operated at a speed not greater than 5 miles per hour within the area of river mile markers 634.5 and 634.9 and designated by buoys or other approved uniform waterway markers.
	40.48(2) The city of Marquette will designate and maintain the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.49(462A) Zoning of Green Island, Jackson County. All motorboats except authorized emergency vessels shall be operated at a speed no greater than 5 miles per hour year around on boat channels adjacent to the interior channel 4 levee at the Green Island State Wildlife area. Both channels begin at the Green Island county road parking lot and proceed north 7920 feet along each side of the channel 4 levee to an intersection with the Snag Slough complex.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.50(462A) Mooring of vessels on riparian property of the state of Iowa. Where the state of Iowa owns riparian property adjacent to sovereign land or water, mooring of vessels is prohibited between sunset and sunrise on those riparian or sovereign lands or waters where posted by either official buoys or official signs of the department of natural resources.
571—40.51(462A) Little River Lake, Decatur County. Motorboats of outboard or inboard-outdrive type shall be permitted on Little River Lake. Vessels operating within a designated area beginning at the dam and extending north approximately to the mouth of “Bait Shop Bay” shall be operated at a speed no greater than 5 miles per hour. The Decatur County conservation board shall designate the speed zone with marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.52(462A) Zoning of the Mississippi River, Johnson Slough, Clayton County. All vessels shall be operated at a speed not greater than 5 miles per hour within the area of river mile markers 627 and 629.8, in a backwater known as Johnson Slough and designated by marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.53(462A) Zoning of the Mississippi River, Mud Lake, Dubuque County. All vessels shall be operated at a speed not greater than 5 miles per hour within the area of river mile markers 587.6 to 589.3, in a backwater known as Mud Lake and designated by marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.54(462A) Nighttime speed limit, Dickinson County. No vessels, except authorized emergency vessels, shall be operated at speeds greater than 25 miles per hour at any time between one-half hour after sunset and sunrise on all lakes located in Dickinson County.
571—40.55(462A) Zoning of Clear Lake, Cerro Gordo County.
	40.55(1) Areas may be specifically designated for swimming with the use of regulatory buoys.
	40.55(2) Areas within close proximity of dredging operations may be designated as areas where the speed of vessels is restricted to not greater than 5 miles per hour.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.56(462A) Zoning of Mississippi River, Des Moines County, city of Burlington. All vessels shall be operated at a speed no greater than five miles per hour within the area designated by marker buoys or other approved uniform waterway markers beginning at the north city boat ramp and public dock and extending downstream to the south city boat ramp and public dock. The zoned area shall extend no farther than 150 feet from the shore and approximately 150 feet west of the west edge of the barge channel. The city of Burlington shall designate the five-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 7532B, IAB 1/28/09, effective 3/6/09]
571—40.57(462A) Zoning of Catfish Creek, Mines of Spain State Recreation Area, Dubuque County. All vessels shall be operated at a speed not greater than 5 miles per hour within the area beginning at the mouth of Catfish Creek and extending upstream to the confluence of Catfish Creek and Granger Creek and designated by uniform marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.58(462A) Zoning of Lake Cornelia, Wright County. All vessels shall be operated at a speed not greater than 5 miles per hour in the boat harbor and at the boat harbor entrance within the zoned area extending 300 feet from two points on shore and 100 feet in width, equidistant from either side of the harbor entrance. The Wright County conservation board shall designate the boat harbor entrance and the public swimming area with uniform marker buoys approved by the natural resource commission.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.59(462A) Zoning of lakes in Dickinson County. All vessels shall be operated at a speed not greater than 5 miles per hour within 300 feet of shore on all lakes in Dickinson County.
[ARC 8877B, IAB 6/30/10, effective 8/4/10]
571—40.60(462A) Zoning of the Mississippi River, Clayton, Clayton County.
	40.60(1) All vessels, except commercial barge traffic, shall be operated at a speed no greater than 5 miles per hour within an area extending 150 feet from shore and beginning at a point 1,012 feet north of Mississippi River Day Marker 624.7R and extending south to a point 1,012 feet south of the same marker (624.7R).
	40.60(2) The city of Clayton shall designate and maintain the 5-mile-per-hour speed zone with buoys approved by the natural resource commission.
[ARC 1644C, IAB 10/1/14, effective 11/5/14]
These rules are intended to implement the provisions of Iowa Code sections 462A.17, 462A.26, and 462A.31.
[Filed 12/19/61; amended 7/23/62, 1/14/64, 3/24/64, 9/14/65, 1/11/66, 9/13/66,
12/13/67, 7/16/68, 8/14/68, 3/15/73, amended 5/29/75]
[Filed 9/23/76, Notice 6/28/76—published 10/20/76, effective 11/24/76]
[Filed 7/7/77, Notice 3/23/77—published 7/27/77, effective 8/31/77]
[Filed emergency 8/5/77—published 8/24/77, effective 8/5/77]
[Filed 1/9/78, Notice 8/24/77—published 1/25/78, effective 3/1/78]
[Filed emergency 5/2/79 after Notice 3/21/79—published 5/30/79, effective 5/2/79]
[Filed 7/6/79, Notice 5/30/79—published 7/25/79, effective 8/29/79]
[Filed 7/13/82, Notice 5/26/82—published 8/4/82, effective 9/8/82]
[Filed 10/7/82, Notice 6/23/82—published 10/27/82, effective 12/1/82]
[Filed 10/7/82, Notice 9/1/82—published 10/27/82, effective 12/1/82]
[Filed 10/6/83, Notice of 8/3/83—published 10/26/83, effective 12/1/83]
[Filed 3/9/84, Notice 12/21/83—published 3/28/84, effective 5/3/84]
[Filed 4/5/85, Notice 1/30/85—published 4/24/85, effective 5/29/85]
[Filed 9/5/85, Notice 7/3/85—published 9/25/85, effective 10/30/85]
[Filed 4/4/86, Notice 2/26/86—published 4/23/86, effective 5/28/86]
[Filed 10/17/86, Notice 7/30/86—published 11/5/86, effective 12/10/86]
[Filed without Notice 12/12/86—published 12/31/86, effective 2/4/87]
[Filed 8/5/88, Notice 6/1/88—published 8/24/88, effective 9/28/88]
[Filed 8/17/89, Notice 5/3/89—published 9/6/89, effective 10/11/89]
[Filed 2/2/90, Notice 11/29/89—published 2/21/90, effective 3/28/90]
[Filed 1/18/91, Notice 10/31/90—published 2/6/91, effective 3/28/91]
[Filed 2/15/91, Notice 11/28/90—published 3/6/91, effective 4/10/91]
[Filed 1/17/92, Notice 10/30/91—published 2/5/92, effective 3/11/92]
[Filed 6/5/92, Notice 4/1/92—published 6/24/92, effective 7/29/92]
[Filed 11/6/92, Notice 9/30/92—published 11/25/92, effective 12/30/92]
[Filed 8/13/93, Notice 5/26/93—published 9/1/93, effective 10/6/93]
[Filed 2/11/94, Notice 8/4/93—published 3/2/94, effective 4/6/94]
[Filed 5/15/95, Notice 3/1/95—published 6/7/95, effective 7/12/95]
[Filed emergency 8/11/95 after Notice 6/7/95—published 8/30/95, effective 8/11/95]
[Filed 11/16/95, Notice 9/27/95—published 12/6/95, effective 1/10/96]
[Filed without Notice 2/9/96—published 2/28/96, effective 4/3/96]
[Filed 5/15/96, Notice 2/28/96—published 6/5/96, effective 7/10/96]
[Filed 10/18/96, Notice 8/28/96—published 11/6/96, effective 12/11/96]
[Filed 12/12/97, Notice 10/8/97—published 12/31/97, effective 2/4/98]
[Filed 11/13/98, Notice 9/9/98—published 12/2/98, effective 1/6/99]
[Filed 3/19/99, Notice 12/30/98—published 4/7/99, effective 5/12/99]
[Filed 8/20/99, Notice 6/30/99—published 9/8/99, effective 10/13/99]
[Filed 2/17/00, Notice 12/1/99—published 3/8/00, effective 4/12/00]
[Filed 3/14/02, Notice 1/9/02—published 4/3/02, effective 5/8/02]
[Filed emergency 5/20/04 after Notice 3/31/04—published 6/9/04, effective 5/20/04]
[Filed 8/13/04, Notice 6/9/04—published 9/1/04, effective 10/6/04]
[Filed 8/13/04, Notice 7/7/04—published 9/1/04, effective 10/6/04]
[Filed emergency 6/17/05—published 7/6/05, effective 6/17/05]
[Filed emergency 8/11/05 after Notice 6/8/05—published 8/31/05, effective 8/11/05]
[Filed 3/10/06, Notice 1/4/06—published 3/29/06, effective 5/3/06]
[Filed 10/18/07, Notice 8/29/07—published 11/7/07, effective 12/12/07]
[Filed emergency 5/14/08—published 6/4/08, effective 5/14/08]
[Filed 7/10/08, Notice 5/7/08—published 7/30/08, effective 9/3/08]◊
[Filed 7/10/08, Notice 6/4/08—published 7/30/08, effective 9/17/08]
[Filed ARC 7532B (Notice ARC 7309B, IAB 11/5/08), IAB 1/28/09, effective 3/6/09]
[Filed ARC 8877B (Notice ARC 8728B, IAB 5/5/10), IAB 6/30/10, effective 8/4/10]
[Filed Emergency ARC 0111C, IAB 5/2/12, effective 4/13/12]
[Filed ARC 1644C (Notice ARC 1530C, IAB 7/9/14), IAB 10/1/14, effective 11/5/14]
◊	Two or more ARCs