Iowa Administrative Code › Agency 567 - Environmental Protection Commission › Title II - Air Quality › Division C › Chapter 52 - Criteria and Conditions for Authorizing Withdrawal, Diversion and Storage of Water › Rule 567-52.8 - Designated Protected Flows of Streams

Current through Register Vol. 47, No. 3, July 24, 2024
(1)
Purpose.
The protected
				  flow is designed to protect and maintain adequate water supplies for ordinary
				  household and livestock use; for fish and wildlife use; for recreational use;
				  for in-stream wasteload assimilation and pollution control; for beneficial
				  water use needs in the watershed; for preservation of aesthetic values; and for
				  other uses of a public nature.
(2)
Protected flow basis.
The protected flow is based in part on
				  statistical information contained in "Low-Flow Characteristics of Iowa
				  Streams," (INRC Bulletin No. 9 (1958)), "Low-Flow Characteristics of Iowa
				  Streams through 1966," (INRC Bulletin No. 10 (1970)), "Annual and Seasonal
				  Low-Flow Characteristics of Iowa Streams," (INRC Bulletin No. 13 (1976)), and
				  "Statistical Summaries of Selected Iowa Streamflow Data Through September 1996,
				  U.S. Geological Survey Open-File Report 98-176 (1998)."
(3)
Protected flow levels.
a.
At stream gaging
				  stations.
The protected flow, expressed in cubic feet per second (cfs)
				  at points on a stream with an official U.S. Geological Survey stream flow gage
				  are listed in the table below.
The Protected Flow at U.S.G.S.
Stream Gaging Locations
River or Stream
Gage Location
Protected Low Flow (CFS)
Beaver Creek
New Hartford
18
Big Creek
Mount Pleasant
2
Black Hawk Creek
Hudson
4.5
Boone River
Webster City
24
Boyer River
Logan
41
Cedar River
Conesville
1240
Cedar River
Cedar Rapids
937
Cedar River
Waterloo
710
Cedar River
Janesville
185
Cedar River
Charles City
100
Chariton River
Rathbun
2.9
Des Moines River
Keosauqua
350
Des Moines River
Ottumwa
300
Des Moines River
Tracy
300
Des Moines River
Des Moines (14th St.)
300
Des Moines River
Saylorville
200
Des Moines River
Stratford
310
Des Moines River
Fort Dodge
220
East Fork Des Moines River
Dakota City
42
East Nishnabotna River
Red Oak
37
East Nishnabotna River
Atlantic
18
Floyd River
James
22
Iowa River
Wapello
1390
Iowa River
Lone Tree
150
Iowa River
Iowa City
150
Iowa River
Marengo
204
Iowa River
Marshalltown
104
Iowa River
Rowan
21
Little Cedar River
Ionia
28
Little Sioux River
Turin
200
Little Sioux River
Correctionville
106
Little Sioux River
Linn Grove
42
Maple River
Mapleton
50
Maquoketa River
Maquoketa
372
Middle Raccoon River
Panora
20
Middle River
Indianola
14.6
Monona-Harrison Ditch
Turin
27
Nishnabotna
Hamburg
128
Nodaway
Clarinda
15
North Raccoon River
Jefferson
82
North Raccoon River
Sac City
14
North River
Norwalk
5.6
North Skunk River
Sigourney
35
Raccoon River
Van Meter
190
Rock River
Rock Valley
26
Shell Rock River
Shell Rock
147
Skunk River
Augusta
287
Soldier River
Pisgah
20
South Raccoon River
Redfield
58
South River
Ackworth
4.1
South Skunk River
Oskaloosa
94
South Skunk River
Ames (below Squaw Creek)
23
South Skunk River
Ames
4.8
Thompson River
Davis City
13
Turkey River
Garber
210
Upper Iowa River
Decorah
80
Walnut Creek
Hartwick
2
Wapsipinicon River
DeWitt
150
Wapsipinicon River
Independence
17
West Fork Cedar River
Finchford
66
West Fork Ditch
Hornick
12
West Nishnabotna River
Randolph
67
West Nishnabotna River
Hancock
49
White Breast Creek
Dallas
3.2
Winnebago River
Mason City
39
b.
At stream locations other than gaging stations.
The protected
				  flow for points on a stream, other than at a U.S. Geological Survey gaging
				  station, shall be established, as the need arises, by comparison of available
				  stream flow data and basin characteristics.
This rule is intended to implement Iowa Code sections
					 455B.261, 455B.262 and 455B.267.