4.5 River Basins
T ABLE 4.65 Water quality classifcation and rating information for the Lumber River Basin
Percent (Total Basin Waters)
Percent (Total Basin Waters)
Percent (Total Basin Waters)
Freshwater Miles
Freshwater Acres
Estuary Acres
Classifcations
Total Basin Waters*
6,316
—
9,987
—
4,680 4,493
— 96 —
HQW ORW
202
7
164
2
20
<1
8,840
89
—
Percent (Total Monitored)
Percent (Total Monitored)
Percent (Total Monitored)
Freshwater Miles
Freshwater Acres
Estuary Acres
Use Ratings
Total Named Waters
2,220
— 27
9,130 8,936
— 98 — —
4,499
—
Supporting Impaired Not Rated
595
78
2
74 61
3 3
— —
4,400
98 — <1
— 21
No Data
1,490
67
194
2
* Total Basin Waters estimated from National Hydrography Dataset (NHD), April 2015 (EPA 2014b) .
SGCN associated with aquatic communities found in this river basin. Table 4.66 identifes the SGCN found in the Lumber River Basin.
4.5.11.4 Threats Affecting Aquatic Species Impacts afecting species and their habitats within the Lumber River Basin include non- point sources of pollution resulting from inadequate management practices related to agri- culture, forestry, construction, and stormwater discharges. Sedimentation due to erosion is one of the major causes of habitat loss in this basin. In addition, the Lumber River Basin has a dense concentration of swine production facili- ties. Tere are 217 permitted Confned Animal Feeding Operations (CAFOs) in the Lumber River Basin with 313 waste lagoons associated with the facilities. Waste from these sites contains high levels of nutrients (e.g., nitrogen and phosphorus) in addition to fecal coli- form bacteria and any chemical compounds, such as antibiotics or hormone products used in commercial feeding operations (NCDWR 2015b) . Animal-waste lagoons and spray felds that discharge near or into aquatic environments through runof, percolation into groundwater, and volatilization of ammonia and the release of bacterial contamination can signifcantly degrade water quality and endanger human and animal health (Mallin 2003; Mallin and Cahoon 2003) .
According to an NCDENR dam inventory (NCDEMLR 2014) , there are at least 145 impound- ments in the basin, most of which are small impoundments. Te consequences of these
570
2015 NC Wildlife Action Plan
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