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

 

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The image above shows USFS vegetation stand types for the Lower 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. 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.


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This map view from the KRIS Big River project shows the Lower North Fork Big River Calwater watershed. The northern half 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 north and south of the JDSF boundary.


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This photo was taken in the North Fork Big River drainage and shows pampas grass and Ceanothus as well as some small conifers and hardwood species. This area would be an example of a Non-Forest signature on Landsat and Saplings at middle distance in the photo. Photo by Vivian Bolin.


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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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