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KRIS Big River: Picture Page

Area North Fork Big River
Topic USFS VegTypes: Upper North Fork Big CalWater 1994

veg_usfs_nfbig.gif 95K  Click on image to enlarge (95K).

The image above shows USFS vegetation stand types for the Upper North Fork Big River Calwater planning watershed based on a 1994 Landsat image. The stand types are only accurate at the one-hectare scale. Large patches of Non-Forest and Saplings (<5" diameter trees) occur throughout the basin areas are likely the result of timber harvest. Medium-Large Trees (20-29.9") occur in patches along the lower portion of the basin along the northern boundary. Young forest shows as extensive patches of Small and Small/Medium trees. See Info Links for more information. Taken from the KRIS Big River Map project.

nfbigvegjdsf_sm.jpg 175K  Click on image to enlarge (175K).  Click here to display a larger version (364K).

This map view from the KRIS Big River project shows the Upper North Fork Big River Calwater watershed. The lower third of the Calwater is within Jackson Demonstration State Forest for which the boundary is shown. See the previous Picture for a key to colors representing forest size and vegetation types. Note the difference in vegetation types upstream of the JDSF boundary.

changescene_nfbig_1994_98.gif 270K  Click on image to enlarge (270K).

The image above comes from the KRIS Big River Map project and shows changes in vegetation between 1994 and 1998 according to CDF FRAP change scene detection. Reductions of vegetation associated with timber harvest show in the Upper North Fork and James Creek on private land east of Jackson Demonstration State Forest. JDSF shows no loss of canopy cover during this period.

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