Watershed Health Report

Big Sioux River - Pipestone Watershed

HUC 8: 10170203  DNR Major: 82
Major River Basin: Missouri River

Area: 511 square miles
Stream Length: 1,082 miles
Lakes Area: 118 acres

Watershed Mean Health Score: 48

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Overall Watershed Score
Mean Watershed Score:
|
48
Minimum Index Score:
|
6
Hydrology Health Scores
Mean Watershed Score:
|
67
Minimum Index Score:
|
17
Index:
Perennial Cover:
|
17
Impervious Surface:
|
96
Water Withdrawal:
|
99
Hydrologic Storage:
|
63
Flow Variability:
|
61
Geomorphology Health Scores
Mean Watershed Score:
|
55
Minimum Index Score:
|
47
Index:
Soil Erodability:
|
65
Groundwater Contamination:
|
52
Climate Vulnerability:
|
47
Biology Health Scores
Mean Watershed Score:
|
36
Minimum Index Score:
|
6
Index:
Terrestrial Habitat Quality:
|
6
Stream Species:
|
58
Species Richness:
|
50
At-Risk Species:
|
28
Connectivity Health Scores
Mean Watershed Score:
|
32
Minimum Index Score:
|
9
Index:
Terrestrial Habitat Connectivity:
|
9
Aquatic Connectivity:
|
33
Riparian Connectivity:
|
55
Water Quality Health Scores
Mean Watershed Score:
|
52
Minimum Index Score:
|
25
Index:
Non-Point Source:
|
25
Point Source:
|
85
Water Quality Assessment:
|
45

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.