Stream & Watershed Health Indicators:
Predicted Poor Quality Watersheds
Introduction | High Qualtity | Poor Quality
| Predicted Poor Quality Watersheds (Values in
Percent)
|
| Watershed |
Code |
Impervious |
Tree Cover |
Hub |
Corridor |
Developed |
Agriculture |
Barren |
Current |
Managed |
Ecologic |
| Anacostia River |
2 |
18.56 |
16.27 |
45 |
24 |
13 |
17 |
1 |
26.55 |
28.80 |
41.52 |
| Antietam Creek |
3 |
4.32 |
17.50 |
82 |
6 |
0 |
11 |
0 |
25.49 |
44.00 |
82.30 |
| Assawoman Bay |
4 |
9.11 |
8.08 |
48 |
37 |
0 |
15 |
0 |
64.37 |
74.56 |
91.37 |
| Back River |
8 |
26.33 |
6.59 |
91 |
0 |
1 |
5 |
3 |
22.36 |
25.95 |
42.12 |
| Bird River |
12 |
14.28 |
17.30 |
53 |
26 |
1 |
15 |
4 |
21.98 |
27.20 |
48.66 |
| Cabin John Creek |
20 |
14.50 |
14.22 |
42 |
29 |
22 |
7 |
0 |
14.16 |
14.90 |
22.94 |
| Conococheague Creek |
26 |
5.41 |
14.07 |
24 |
36 |
2 |
38 |
0 |
15.14 |
35.31 |
72.96 |
| Gunpowder River |
40 |
4.16 |
15.94 |
76 |
12 |
4 |
6 |
1 |
76.21 |
78.16 |
86.76 |
| Gwynns Falls |
41 |
27.32 |
12.13 |
53 |
25 |
3 |
18 |
0 |
12.22 |
17.56 |
30.58 |
| Isle of Wight Bay |
43 |
5.71 |
17.36 |
56 |
31 |
1 |
12 |
0 |
40.98 |
56.14 |
86.56 |
| Marsh Run |
70 |
4.21 |
13.57 |
18 |
0 |
0 |
82 |
0 |
13.46 |
31.08 |
71.02 |
| Middle River - Browns |
76 |
16.10 |
12.56 |
97 |
0 |
1 |
2 |
0 |
37.39 |
43.91 |
68.46 |
| Oxon Creek |
85 |
26.75 |
9.29 |
0 |
0 |
0 |
0 |
0 |
21.33 |
22.37 |
39.92 |
| Rock Creek |
103 |
16.20 |
13.79 |
42 |
16 |
13 |
29 |
0 |
23.84 |
28.09 |
37.45 |
| Wicomico River Head |
134 |
7.73 |
16.66 |
73 |
13 |
1 |
12 |
0 |
20.70 |
35.06 |
66.14 |
Code
Field used to relate the polygon to the watershed name
Impervious
Field used to represent the percent impervious surface within the watershed
Tree Cover
Field used to represent the percent tree cover within the watershed
Hub, Corridor, Developed, Agriculture, Barren
Fields used to represent the percent respective Green Infrastructure within the watershed
Current, Managed, Ecologic
Fields used to represent the percent protection under each respective exclusion scenario for the SLEUTH Model.
The level of impervious surface and forest cover are important factors in flood and erosion control, water quality protection, and wildlife habitat. The highlighted watershed boundaries represent potentially healthy or unhealthy watershed. Zonal statistics were calculated, using RESAC 2000 percent impervious surface and percent tree cover data, summarized within zones of 8 digit Maryland watershed boundaries. potentially unhealthy watersheds were selected out based on the conditions that they had high percent mean impervious values and sparse tree cover. potentially healthy watersheds were selected out based on the conditions that they had low percent mean impervious values and abundant tree cover.
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