CHAPTER 45
BOAT MOTOR REGULATIONS
[Prior to 12/31/86, Conservation Commission[290] Ch 40]
571—45.1(462A) Horsepower rating. The horsepower rating of an outboard motor permitted on artificial lakes under the authority of Iowa Code chapter 462A, and these rules, shall be as determined by the manufacturer when the motor was originally produced.
571—45.2(462A) Alteration of horsepower rating. An outboard motor which has been altered to increase its horsepower in excess of ten as rated by the original manufacturer shall not be permitted on artificial lakes.
571—45.3(462A) Propulsion mechanism not in use. Any power unit mounted or carried aboard a vessel, while not being used or operated as a source of propulsion, shall be lawful on artificial lakes, so long as the auxiliary power unit being used or operated as a source of propulsion is within the lawful horsepower limitation established for that lake.
571—45.4(462A) Horsepower limitations on artificial lakes.
	45.4(1) General horsepower limitation. On artificial lakes of 100 acres or less, a vessel shall only be operated with an electric motor or with an outboard motor where permitted by subrule 45.4(2).
	45.4(2) Horsepower limitation exceptions for artificial lakes of 100 acres or less. Motors larger than 1½ horsepower may be operated on the following lakes as designated:
Avenue of the Saints Lake, Bremer County—unrestricted horsepower at a no-wake speed.
Banner Lakes at Summerset State Park, Warren County—motor boats of outboard or inboard/outdrive type and unrestricted horsepower at a no-wake speed.
Beaver Lake, Dallas County—unrestricted horsepower operated at a no-wake speed.
Beeds Lake, Franklin County—unrestricted horsepower operated at a no-wake speed.
Black Hawk Pits, Sac County—unrestricted horsepower operated at a no-wake speed.
Crawford Creek Recreation Area Lake, Ida County—unrestricted horsepower operated at a no-wake speed.
Deer Creek Lake, Plymouth County—unrestricted horsepower operated at a no-wake speed.
Fogle Lake, Ringgold County—unrestricted horsepower operated at a no-wake speed.
George Wyth Lake, Black Hawk County—unrestricted horsepower operated at a no-wake speed.
Lake Iowa, Iowa County—unrestricted horsepower operated at a no-wake speed.
Lake of Three Fires, Taylor County—unrestricted horsepower operated at a no-wake speed.
Loch Ayr, Ringgold County—outboard motors not greater than 100 horsepower.
Meadow Lake, Adair County—unrestricted horsepower operated at a no-wake speed.
Otter Creek Lake, Tama County—unrestricted horsepower operated at a no-wake speed.
Silver Lake, Delaware County—unrestricted horsepower operated at a no-wake speed.
Thayer Lake, Union County—unrestricted horsepower operated at a no-wake speed.
Williamson Pond, Lucas County—unrestricted horsepower operated at a no-wake speed.
	45.4(3) Horsepower limitations for artificial lakes of more than 100 acres in size. On artificial lakes of more than 100 acres, vessels may be operated with unrestricted horsepower at a no-wake speed except as otherwise permitted by subrule 45.4(2). The following artificial lakes have special horsepower restrictions:
	a. 	Green Valley Lake, Union County—no inboard or racing-type craft are permitted. Vessels must be operated at a no-wake speed except in designated ski areas as established in 571—36.7(462A).
	b. 	Lake Icaria, Adams County—motorboats of outboard or inboard/outdrive type. Vessels must be operated at a no-wake speed when within 50 feet of another vessel which is not underway or is operating at a no-wake speed. Additional speed and distance regulations apply as established in 571—40.20(462A).
	c. 	Lake McBride, Johnson County—unrestricted horsepower operated at a no-wake speed only from September 8 through May 20 of each year. A motorboat with a power unit exceeding 10 horsepower shall not be permitted the remainder of the year.
	d. 	Three Mile Lake, Union County—motorboats of outboard or inboard/outdrive type with power not to exceed 200 horsepower. Vessels must be operated at a no-wake speed when within 50 feet of another vessel which is not underway or is operating at a no-wake speed. Additional speed and distance regulations apply as established in 571—40.44(462A).
571—45.5(462A) Artificial marshes. A motorboat equipped with any power unit mounted or carried aboard the vessel may be operated on the following listed artificial marshes under the jurisdiction of the department of natural resources at a no-wake speed between January 1 and August 31 and with no speed restrictions between September 1 and December 31.
Bays Branch, Guthrie County
Big Marsh, Butler County
Brown’s Slough, Lucas County
Cardinal Marsh, Winneshiek County
Dudgeon Lake, Benton County
Elk Creek Marsh, Worth County
Green Island, Jackson County
Hendrickson Marsh, Story County
Hooper Pond, Warren County
North Colyn, Lucas County
Otter Creek Marsh, Tama County
Princeton Area, Scott County
Riverton, Fremont County
Round Pond, Johnson County
South Colyn, Lucas County
Sweet Marsh, Bremer County
Walnut Creek Marsh, Ringgold County
Willow Slough, Mills County
Woodpecker Marsh, Wayne County
Nothing in this rule is to be construed as limiting motorboat horsepower on natural marshes under the jurisdiction of the department of natural resources.
These rules are intended to implement Iowa Code sections 462A.3, 462A.9, 462A.26, and 462A.31.
[Filed 7/13/82, Notice 4/28/82—published 8/4/82, effective 9/8/82]
[Filed 12/2/83, Notice 10/26/83—published 12/21/83, effective 2/1/84]
[Filed 4/5/85, Notice 1/30/85—published 4/24/85, effective 5/29/85]
[Filed 2/7/86, Notice 9/25/85—published 2/26/86, effective 4/16/86]
[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 2/20/87, Notice 12/3/86—published 3/11/87, effective 4/15/87]
[Filed 6/11/87, Notice 4/8/87—published 7/1/87, effective 8/5/87]
[Filed 5/13/88, Notice 3/23/88—published 6/1/88, effective 7/6/88]
[Filed 8/5/88, Notice 6/29/88—published 8/24/88, effective 9/28/88]
[Filed 10/14/88, Notice 8/24/88—published 11/2/88, effective 12/7/88]
[Filed 3/17/89, Notice 12/28/88—published 4/5/89, effective 5/10/89]
[Filed 10/12/90, Notice 8/8/90—published 10/31/90, effective 12/5/90]
[Filed 5/10/91, Notice 3/6/91—published 5/29/91, effective 7/3/91]
[Filed 6/7/91, Notice 4/3/91—published 6/26/91, effective 7/31/91]
[Filed 10/11/91, Notice 8/7/91—published 10/30/91, effective 12/4/91]
[Filed 10/8/93, Notice 9/1/93—published 10/27/93, effective 12/1/93]
[Filed 12/3/93, Notice 10/27/93—published 12/22/93, effective 1/26/94]
[Filed emergency 5/20/94—published 6/8/94, effective 5/20/94]
[Filed 11/4/94, Notice 8/31/94—published 11/23/94, effective 12/28/94]
[Filed 5/15/96, Notice 12/6/95—published 6/5/96, effective 7/10/96]
[Filed 9/20/96, Notice 7/3/96—published 10/9/96, effective 11/13/96]
[Filed 8/22/97, Notice 6/4/97—published 9/10/97, effective 10/15/97]
[Filed 12/11/98, Notice 10/7/98—published 12/30/98, effective 2/3/99]
[Filed 12/19/01, Notice 10/31/01—published 1/9/02, effective 2/13/02]
[Filed 6/18/04, Notice 1/7/04—published 7/7/04, effective 8/11/04]
[Filed 11/20/08, Notice 10/8/08—published 12/17/08, effective 1/21/09]