Wetlands and shallow-water habitats are classified according to Cowardin et al. (1979). Eight NWI classes were identified at the Pelham Range (Table 1). The stream classes are R4SB (riverine, intermittent) and R2UB (riverine, unconsolidated bottom). Wetland classes include PSS (palustrine, scrub shrub), PEM (palustrine, emergent), PFO (palustrine, forested), POW (palustrine, open water), PFO/PSS (palustrine, forested with scrub shrub), and PEM/PSS (palustrine, emergent with scrub shrub).
Table 1. Occurrence of NWI Classes on Pelham Range, AL | ||
NWI Class1 | Frequency | Area/Length |
R4SB | 209 | 68.38 miles |
R2UB | 50 | 18.03 miles |
PSS | 24 | 110.66 acres |
PEM | 32 | 251.11 acres |
PFO | 66 | 601.36 acres |
POW | 10 | 30.67 acres |
PFO/PSS | 2 | 3.14 acres |
PEM/PSS | 1 | 0.34 acre |
1Cowardin et al. 1979 |
Areas on Pelham Range potentially subject to Section 404 of the Clean Water Act include palustrine forested wetlands, palustrine scrub/shrub wetlands, palustrine emergent wetlands, and other waters including streams, intermittent streams, and ponds. Jurisdictional wetlands and other waters are typically located within relative surface depressions and/or along perennial and intermittent stream corridors. Wetland areas and other waters were characterized during the onsite field work by 19 sample points and 110 observation points. There are approximately 966.61 acres of wetlands, 30.67 acres of other waters (ponds), and 86.41 miles of other waters (streams and intermittent streams) scattered throughout Pelham Range. Caution should be taken within a 100-ft buffer on either side of the potentially jurisdictional areas for the presence of other small wetlands or streams.
Table 2 is a compilation of the acreage and types of areas potentially regulated under Section 404 of the Clean Water Act.
Table 2. Delineation Results | ||
All CWA Section 404 Regulated Waters | Frequency | Size |
Streams | 259 | 86.41 miles |
Lakes and Ponds | 10 | 30.67 acres |
Wetlands | 135 | 966.61 acres |
Total Area | 145 | 997.28 acres |