Watershed Health Report

Mississippi River - Twin Cities Watershed

HUC 8: 07010206  DNR Major: 20
Major River Basin: Upper Mississippi

Area: 1,007 square miles
Stream Length: 932 miles
Lakes Area: 56,405 acres

Watershed Mean Health Score: 42

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Overall Watershed Score
Mean Watershed Score:
|
42
Minimum Index Score:
|
3
Hydrology Health Scores
Mean Watershed Score:
|
42
Minimum Index Score:
|
12
Index:
Perennial Cover:
|
36
Impervious Surface:
|
27
Water Withdrawal:
|
12
Hydrologic Storage:
|
68
Flow Variability:
|
65
Geomorphology Health Scores
Mean Watershed Score:
|
66
Minimum Index Score:
|
26
Index:
Soil Erodability:
|
71
Groundwater Contamination:
|
26
Climate Vulnerability:
|
100
Biology Health Scores
Mean Watershed Score:
|
40
Minimum Index Score:
|
8
Index:
Terrestrial Habitat Quality:
|
8
Stream Species:
|
58
Species Richness:
|
61
At-Risk Species:
|
31
Connectivity Health Scores
Mean Watershed Score:
|
24
Minimum Index Score:
|
3
Index:
Terrestrial Habitat Connectivity:
|
10
Aquatic Connectivity:
|
3
Riparian Connectivity:
|
59
Water Quality Health Scores
Mean Watershed Score:
|
37
Minimum Index Score:
|
26
Index:
Non-Point Source:
|
47
Point Source:
|
39
Water Quality Assessment:
|
26

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.