Watershed Health Report

Mississippi River - Winona Watershed

HUC 8: 07040003  DNR Major: 40
Major River Basin: Lower Mississippi

Area: 655 square miles
Stream Length: 1,429 miles
Lakes Area: 15,836 acres

Watershed Mean Health Score: 55

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Overall Watershed Score
Mean Watershed Score:
|
55
Minimum Index Score:
|
7
Hydrology Health Scores
Mean Watershed Score:
|
81
Minimum Index Score:
|
60
Index:
Perennial Cover:
|
60
Impervious Surface:
|
83
Water Withdrawal:
|
98
Hydrologic Storage:
|
94
Flow Variability:
|
69
Geomorphology Health Scores
Mean Watershed Score:
|
42
Minimum Index Score:
|
18
Index:
Soil Erodability:
|
46
Groundwater Contamination:
|
18
Climate Vulnerability:
|
63
Biology Health Scores
Mean Watershed Score:
|
50
Minimum Index Score:
|
36
Index:
Terrestrial Habitat Quality:
|
36
Stream Species:
|
69
Species Richness:
|
54
At-Risk Species:
|
41
Connectivity Health Scores
Mean Watershed Score:
|
43
Minimum Index Score:
|
7
Index:
Terrestrial Habitat Connectivity:
|
45
Aquatic Connectivity:
|
7
Riparian Connectivity:
|
76
Water Quality Health Scores
Mean Watershed Score:
|
59
Minimum Index Score:
|
41
Index:
Non-Point Source:
|
41
Point Source:
|
79
Water Quality Assessment:
|
56

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.