PNP comment: So we will see what this group came up with. I believe that Dr. Harter is not influenced by politics. At least, this was a several-year project taking historical information into account. But once again, it only deals with 10 percent of the Scott Valley — the valley floor — and does not include the multi-aspects of rain, snow, tree and vegetation in the uplands. — Editor Liz Bowen
This is a message from the California Regional Water Quality Control Board, North Coast Region (1).
The North Coast Regional Water Board is pleased to announce the availability of a report authored by a team of UC Davis researchers led by Dr. Thomas Harter, documenting progress in the development of a computer model to simulate the groundwater dynamics of Scott Valley in Siskiyou County, California.
The report, entitled “Scott Valley Integrated Hydrologic Model: Data Collection, Analysis, and Water Budget”, documents a number of milestones in the development of the modeling tool, including the assembly of precipitation and stream flow records, soil types, cropping patterns, and water use information. The report also documents the development of a soil water budget model that spatially integrates these data to calculate the amount of water used by crops, as well as the amount of irrigated water that percolates to groundwater. The integration of the soil water budget model and the groundwater flow model (MODFLOW) form the Scott Valley Integrated Hydrologic Model. Dr. Harter and his team are currently calibrating the integrated hydrologic model and expect to begin using the model to evaluate various options to address flow-related concerns this fall. The calibration relies on data describing the amount of water used by crops collected by the UC Cooperative Extension, water table data collected by the Siskiyou Resource Conservation District, and stream flow data collected by the US Geological Survey.
The work of Dr. Harter and his team was initiated in response to needed actions identified in the Scott River Temperature TMDL process, which identified the strong influence groundwater contributions play in determining the temperature of the Scott River. The work has largely been funded by the North Coast Regional Water Quality Control Board and State Water Resources Control Board.
For more information, see the UC Davis press release and read the report, available at the following links:
UC Davis press release: http://news.ucdavis.edu/search/news_detail.lasso?id=10576
Scott Valley Integrated Hydrologic Model: Data Collection, Analysis, and Water Budget: http://groundwater.ucdavis.edu/files/165395.pdf
For information regarding the Scott River TMDL process contact Bryan McFadin, Senior Water Resource Control Engineer with the Regional Water Board, at 707-576-2751, or firstname.lastname@example.org.