Watershed Health Report

Thief River Watershed

HUC 8: 09020304  DNR Major: 65
Major River Basin: Red River

Area: 1,048 square miles
Stream Length: 1,430 miles
Lakes Area: 16,048 acres

Watershed Mean Health Score: 64

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Overall Watershed Score
Mean Watershed Score:
|
64
Minimum Index Score:
|
23
Hydrology Health Scores
Mean Watershed Score:
|
70
Minimum Index Score:
|
39
Index:
Perennial Cover:
|
60
Impervious Surface:
|
100
Water Withdrawal:
|
100
Hydrologic Storage:
|
39
Flow Variability:
|
53
Geomorphology Health Scores
Mean Watershed Score:
|
86
Minimum Index Score:
|
74
Index:
Soil Erodability:
|
92
Groundwater Contamination:
|
91
Climate Vulnerability:
|
74
Biology Health Scores
Mean Watershed Score:
|
41
Minimum Index Score:
|
28
Index:
Terrestrial Habitat Quality:
|
31
Stream Species:
|
60
Species Richness:
|
45
At-Risk Species:
|
28
Connectivity Health Scores
Mean Watershed Score:
|
50
Minimum Index Score:
|
23
Index:
Terrestrial Habitat Connectivity:
|
38
Aquatic Connectivity:
|
23
Riparian Connectivity:
|
90
Water Quality Health Scores
Mean Watershed Score:
|
74
Minimum Index Score:
|
42
Index:
Non-Point Source:
|
81
Point Source:
|
99
Water Quality Assessment:
|
42

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.