Since October 1999, the Iowa Department of Natural Resources has maintained a network of stations to monitor ambient water quality in the state. Currently, a total of 60 stream sites are sampled. However, the total number of stations monitored each year has varied. The most stations sampled were a total of 84 stream sites and 1 spring from 2003 to 2006.
Sites in this statewide ambient stream network have been sampled on a monthly basis since October 1999 for a variety of parameters. These data are used for a number of purposes, such as determining status and trends, to determine if Iowa’s rivers support beneficial uses for which they are designated, to calculate nutrient loads, and to support development of new or revised water quality standards.
Data collected from the ambient stream network is available in
AQuIA - Iowa DNR's online water quality monitoring results database. The data have also been summarized on an annual basis as well as a cumulative basis. The most recent data summaries are available below.
Previous annual and cumulative stream summaries are available at http://publications.iowa.gov/. Enter “Stream water quality” in the Search option to retrieve these summaries.
STORETID
|
Name
|
x_coord
|
y_coord
|
10030001
|
Upper Iowa River near Dorchester
|
-91.50891700
|
43.42149770
|
10030002
|
Yellow River near Volney
|
-91.26492120
|
43.11177890
|
10040002
|
Chariton River at 461st St.
|
-92.8823124
|
40.81051105
|
10070001
|
Beaver Creek near Cedar Falls
|
-92.50670070
|
42.57317020
|
10070002
|
Wolf Creek at La Porte City
|
-92.19379770
|
42.31574780
|
10070003
|
West Fork Cedar River at Finchford
|
-92.54366600
|
42.62897290
|
10070004
|
Black Hawk Creek at Waterloo
|
-92.41360470
|
42.46947460
|
10090001
|
Cedar River near Janesville
|
-92.46655040
|
42.64958570
|
10100001
|
Wapsipinicon River near Independence (US1)
|
-91.97403520
|
42.51215680
|
10120001
|
Shell Rock River at Shell Rock
|
-92.58142950
|
42.71154350
|
10180001
|
Little Sioux River near Larrabee
|
-95.46359290
|
42.86474340
|
10220001
|
Turkey River near Garber
|
-91.26197570
|
42.73954700
|
10220002
|
Volga River near Elkport
|
-91.27677980
|
42.74972930
|
10220003
|
Bloody Run Creek Site #1 (BR01)
|
-91.20555040
|
43.04049910
|
10250001
|
South Raccoon River near Redfield
|
-94.18291730
|
41.57973960
|
10270001
|
Thompson Fork - Grand River at Davis City
|
-93.80787030
|
40.64067070
|
10300001
|
Little Sioux River near Milford
|
-95.18133090
|
43.31891190
|
10340001
|
Cedar River near Charles City (DS1)
|
-92.60261110
|
43.00602720
|
10360001
|
East Nishnabotna River near Shenandoah (US1)
|
-95.38489080
|
40.78567310
|
10360003
|
Nishnabotna River near Hamburg
|
-95.64562143
|
40.60174359
|
10400001
|
Boone River near Stratford
|
-93.89227030
|
42.34104200
|
10420001
|
Iowa River near Gifford
|
-93.07568120
|
42.31021340
|
10430001
|
Boyer River near Missouri Valley
|
-95.84522940
|
41.57312720
|
10430002
|
Soldier River near Pisgah
|
-95.93156430
|
41.83058300
|
10440001
|
Cedar Creek near Oakland Mills
|
-91.67370190
|
40.92539420
|
10460001
|
West Fork Des Moines River near Humboldt
|
-94.20714160
|
42.67437070
|
10490001
|
North Fork Maquoketa River near Hurstville
|
-90.67212210
|
42.09017750
|
10490004
|
Maquoketa River west of Maquoketa
|
-90.69540368
|
42.07073661
|
10490005
|
Maquoketa River at Spragueville
|
-90.51782
|
42.1014
|
10500001
|
Indian Creek near Colfax
|
-93.22609370
|
41.74615730
|
10520001
|
Old Mans Creek nr Iowa City
|
-91.61562800
|
41.60652620
|
10540001
|
North Skunk River
|
-92.25739540
|
41.28375270
|
10550001
|
East Fork of The Des Moines River near St. Joseph
|
-94.23340400
|
42.95138640
|
10560002
|
Skunk River near Augusta
|
-91.27558980
|
40.75340048
|
10570001
|
Cedar River Downstream of Cedar Rapids (DS1)
|
-91.55058560
|
41.92574160
|
10580002
|
Iowa River near Lone Tree
|
-91.47909000
|
41.42386500
|
10580003
|
Iowa River near Wapello
|
-91.18214713
|
41.18033068
|
10620001
|
South Skunk River near Oskaloosa
|
-92.65714470
|
41.35525720
|
10630002
|
Cedar Creek near Bussey
|
-92.90790480
|
41.21906980
|
10630003
|
Whitebreast Creek near Dallas
|
-93.29011400
|
41.24668700
|
10640002
|
Iowa River Downstream of Marshalltown (DS1)
|
-92.84657750
|
42.05079900
|
10650001
|
West Nishnabotna River near Malvern
|
-95.52790830
|
40.98727730
|
10670002
|
Maple River near Mapleton
|
-95.79613670
|
42.17142480
|
10670003
|
Little Sioux River near Turin
|
-95.97287661
|
41.96508187
|
10700001
|
Cedar River near Conesville
|
-91.29017050
|
41.40935900
|
10730001
|
West Nodaway River near Shambaugh
|
-95.02827280
|
40.65933650
|
10730002
|
East Nodaway River near Clarinda
|
-94.97974960
|
40.72743490
|
10750001
|
Floyd River near Sioux City
|
-96.31202730
|
42.57674810
|
10770001
|
Beaver Creek near Grimes
|
-93.73549990
|
41.68825320
|
10810001
|
North Raccoon River near Sac City (DS1)
|
-94.98571160
|
42.34000140
|
10820001
|
Wapsipinicon River at De Witt
|
-90.53491040
|
41.76653300
|
10840001
|
Rock River near Hawarden
|
-96.44512130
|
43.08390800
|
10850002
|
South Skunk River near Cambridge (DS1)
|
-93.55101310
|
41.95037970
|
10890001
|
Des Moines River near Keosauqua
|
-91.96061524
|
40.72823230
|
10910001
|
Middle River near Indianola
|
-93.58728520
|
41.42468950
|
10910002
|
North River near Norwalk
|
-93.65502120
|
41.45780610
|
10910003
|
South River near Ackworth
|
-93.43072290
|
41.37229370
|
10920001
|
English River at Riverside
|
-91.58035180
|
41.47553480
|
10970001
|
Little Sioux River near Smithland
|
-95.90642430
|
42.25135660
|
10970002
|
West Fork Ditch at Hornick
|
-96.07780000
|
42.22700000
|