Watershed Health Report

Big Sioux River - Medary Creek Watershed

HUC 8: 10170202  DNR Major: 81
Major River Basin: Missouri River

Area: 41 square miles
Stream Length: 87 miles
Lakes Area: 0 acres

Watershed Mean Health Score: 54

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Overall Watershed Score
Mean Watershed Score:
|
54
Minimum Index Score:
|
14
Hydrology Health Scores
Mean Watershed Score:
|
75
Minimum Index Score:
|
37
Index:
Perennial Cover:
|
37
Impervious Surface:
|
100
Water Withdrawal:
|
100
Hydrologic Storage:
|
80
Flow Variability:
|
61
Geomorphology Health Scores
Mean Watershed Score:
|
47
Minimum Index Score:
|
36
Index:
Soil Erodability:
|
58
Groundwater Contamination:
|
48
Climate Vulnerability:
|
36
Biology Health Scores
Mean Watershed Score:
|
41
Minimum Index Score:
|
24
Index:
Terrestrial Habitat Quality:
|
24
Stream Species:
|
67
Species Richness:
|
47
At-Risk Species:
|
26
Connectivity Health Scores
Mean Watershed Score:
|
39
Minimum Index Score:
|
14
Index:
Terrestrial Habitat Connectivity:
|
31
Aquatic Connectivity:
|
14
Riparian Connectivity:
|
73
Water Quality Health Scores
Mean Watershed Score:
|
68
Minimum Index Score:
|
47
Index:
Non-Point Source:
|
47
Point Source:
|
96
Water Quality Assessment:
|
62

WAT Score
The Watershed Assessment Tool measures five components of watershed health. These components are: Hydrology, Geomorphology, Biology, Connectivity and Water Quality. Each component contains 3-5 health index scores. The index scores are combined to create a component score. The component scores are also combined into an overall mean (average) watershed health score; and the index identified with lowest score is the watershed minimum health score.
 
Please go to the Watershed Health Assessment Results page for more information.