Article Figures & Data
Figures
- Figure 1
Location of Beasley Lake (BL) and Goodwin Creek (GC) watersheds in Mississippi; hydrologic soil group distribution in GC (top) and BL (bottom) watersheds.
- Figure 2
Soil Vulnerability Index (SVI) runoff potential results using LiDAR digital elevation model (DEM) for Goodwin Creek (GC; top) and Beasley Lake (BL; bottom) watersheds. Results are shown for historically cultivated land use only. Boxes in each watershed indicate areas examined further in figures 4 (GC) and 5 (BL).
- Figure 3
Area of cropland within each Soil Vulnerability Index (SVI) category in the Goodwin Creek watershed in 1937, 1982, 1996, and 2004. In 1937 to 1982 the majority of cropland was in the SVI “high” category, but through time this land was removed from cultivation.
- Figure 4
(a) Aerial image from 1979 and (b) image overlaid with the Soil Vulnerability Index (SVI) runoff classification. Areas highlighted in pink are rated high within the SVI classification system, and within many of these areas evidence of erosional gullies and cropland degradation are observed in the aerial image (identified with asterisk [*] to indicate degraded cropland). Location of box within the Goodwin Creek watershed is shown in figure 2.
- Figure 5
(a and b) Aerial image from 1992 (c and d) overlaid with Soil Vulnerability Index (SVI) runoff classification for two areas in the Beasley Lake watershed: (a and c) north of the lake and (b and d) south of the lake. Areas highlighted in pink are rated high in the SVI and appear to coincide with many of the drainage pathways within the watershed. Land north of the lake was converted to Conservation Reserve Program in 2003. Location of boxes are shown in figure 2.
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