|
A.
General Land Use Data
2.
Hybrid Land Use
The Hybrid land use dataset was created to support Ohio
EPA’s work on the Darby Watershed TMDL. This
dataset combined the urban classification from the University
of
Cincinnati
’s 2001 data, the detailed forest figures from 1997 Ohio EPA research, and
lastly all remaining classifications in the 1992-94 National Land Cover Dataset
(See Map 11).
Together this dataset had a total of 18 land use classifications.
Several similar land use types were combined to form 10 different land
use types to simplify discussion (See Figure 16).
For example, there were several land use classifications for forest cover
including woodland, mixed, coniferous, and deciduous which were all combined
into the existing ‘Forest
’ classification to aid in planning. The
‘shrub’ classification was separated from the ‘forest’ classification
because it represented a considerable difference in canopy cover.
|
Figure
16: Hybrid
Land
Use
|
|
Category
|
Acreage
|
Percentage
|
|
Row
Crops
|
225,853
|
63.51%
|
|
Forest
|
69,634
|
19.58%
|
|
Pasture/Hay
|
35,665
|
10.03%
|
|
Shrub
|
9,370
|
2.63%
|
|
Residential
|
9,274
|
2.61%
|
|
Commercial/Industrial/Transportation
|
2,481
|
0.70%
|
|
Urban/Recreational
Grasses
|
1,895
|
0.53%
|
|
Open
Water
|
856
|
0.24%
|
|
Wetlands
|
582
|
0.16%
|
|
Quarries/Gravel
Pits
|
26
|
0.01%
|
|
Total
|
355,609
|
100%
|
In order to further illustrate the Hybrid land use, a data
table was created illustrating the percent of each land use by subwatershed (See
Figure 17). The total amount of
agricultural land (Row Crops and Pasture/Hay) by subwatershed ranged from 53
percent along Big Darby between Little Darby Creek and Hellbranch Run to nearly
93 percent along Treacle Creek between Proctor Run and Little Darby Creek.
Wooded lands ranged from almost 6 percent along the same stretch of
Treacle Creek and over 36 percent in the headwaters of
Big
Darby
Creek. Residential land uses ranged from
.04% along the same stretch of Treacle Creek to nearly 14% in Hellbranch.
Commercial land uses were nearly 10% in Flat Branch.
| Subwatershed
Description |
Total
Acres |
Row
Crops |
Pasture |
Forest |
Shrub |
Wetlands |
Residential |
Urban
Grasses |
Commerical… |
Water |
| Big Darby Headwater to
Flat Branch (1901) |
3,745 |
48.66% |
9.73% |
36.16% |
3.57% |
0.41% |
0.45% |
0.20% |
0.73% |
0.10% |
| Flat Branch (1902) |
8,654 |
61.71% |
4.50% |
19.70% |
1.74% |
0.58% |
0.59% |
1.41% |
9.56% |
0.22% |
| Big Darby between Flat
Branch to Milford Center (1903) |
40,765 |
70.34% |
8.20% |
17.27% |
2.03% |
0.25% |
1.01% |
0.54% |
0.17% |
0.20% |
| Big Darby between Milford
Center and Sugar Run (1904) |
20,957 |
67.07% |
9.54% |
16.63% |
2.44% |
0.14% |
1.90% |
1.15% |
0.84% |
0.29% |
| Buck Run (1905) |
19,023 |
54.23% |
12.50% |
27.12% |
2.24% |
0.20% |
1.13% |
1.14% |
1.26% |
0.19% |
| Robinson Run (1906) |
6,984 |
44.29% |
18.79% |
31.23% |
2.87% |
0.04% |
2.50% |
0.00% |
0.23% |
0.04% |
| Sugar Run (1907) |
12,417 |
57.86% |
16.57% |
20.03% |
2.47% |
0.08% |
2.05% |
0.00% |
0.85% |
0.09% |
| Big Darby between Sugar
Run and I-70 (2001) |
40,087 |
74.94% |
8.56% |
12.47% |
2.53% |
0.07% |
0.77% |
0.02% |
0.22% |
0.35% |
| Big Darby between I-70
and Little Darby (2002) |
9,177 |
41.55% |
14.43% |
31.80% |
3.90% |
0.10% |
6.83% |
0.00% |
0.80% |
0.58% |
| Little Darby Headwaters
to Treacle Creek (2101) |
18,981 |
61.12% |
9.63% |
22.03% |
3.20% |
0.17% |
1.92% |
1.54% |
0.25% |
0.14% |
| Treacle Creek Headwater
to Proctor Run (2102) |
12,614 |
68.79% |
9.83% |
18.92% |
2.21% |
0.10% |
0.06% |
0.00% |
0.02% |
0.07% |
| Proctor Run (2103) |
6,657 |
69.28% |
7.36% |
19.08% |
2.46% |
0.24% |
0.61% |
0.26% |
0.50% |
0.21% |
| Treacle Creek between
Proctor Run and Little Darby (2104) |
4,546 |
88.02% |
4.63% |
5.69% |
1.32% |
0.16% |
0.04% |
0.12% |
0.02% |
0.00% |
| Little Darby between
Treacle Creek and Spring Fork (2105) |
23,482 |
80.87% |
6.13% |
10.67% |
2.00% |
0.11% |
0.20% |
0.00% |
0.00% |
0.01% |
| Spring Fork (2106) |
24,186 |
74.85% |
7.76% |
13.99% |
2.30% |
0.11% |
0.91% |
0.00% |
0.04% |
0.05% |
| Little Darby between
Spring Fork and Big Darby (2107) |
23,474 |
59.54% |
10.21% |
19.80% |
2.91% |
0.22% |
6.25% |
0.04% |
0.87% |
0.15% |
| Hellbranch Run (2201) |
24,138 |
51.28% |
13.02% |
16.88% |
2.65% |
0.15% |
13.94% |
0.94% |
1.07% |
0.06% |
| Big Darby between Little
Darby and Hellbranch (2202) |
15,999 |
42.27% |
10.88% |
35.62% |
4.45% |
0.08% |
4.17% |
1.58% |
0.43% |
0.53% |
| Big Darby between
Hellbranch and Darbyville (2203) |
25,011 |
52.96% |
12.32% |
26.60% |
3.30% |
0.19% |
2.47% |
0.95% |
0.78% |
0.44% |
| Big Darby between
Darbyville and Scioto River (2204) |
13,993 |
61.88% |
11.03% |
22.33% |
3.11% |
0.21% |
0.30% |
0.27% |
0.08% |
0.80% |
| Watershed Totals |
354,890 |
63.51% |
10.03% |
19.58% |
2.63% |
0.16% |
2.61% |
0.53% |
0.70% |
0.24% |
Hybrid Land Use: Ohio EPA Division of
Surface Water, 2004. Created through
a combination of USGS NLCD Data, 1992-94,
Ohio EPA Forest Cover Data, 1996-97, and the 'Urban'
classification from the University of Cincinnati, 2001.
 
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