Tuesday, March 2, 2021


2014 Colusa County Land and Water Use Survey

The Department of Water Resources, Northern Region Office will be conducting a land and water use survey of Colusa County this upcoming summer during June and July. The survey will document how water is utilized and show reuse within each valley and basin.

Many complex irrigation and wildlife management issues are present within the area. Currently, there is little information on how water moves through the complex network of streams, drains, sloughs and how much groundwater is utilized. There is almost no documentation on the reuse of applied water within the valleys and basins.

During the growing season, most of the water is used to irrigate crops and, to a lesser extent, is used on National Wildlife Refuges and State Wildlife Management Areas. During the off season, additional demands have been placed on the already short water supplies for the flooding of duck clubs, National Wildlife Refuges and State Wildlife Management Areas. Ideally, the Department will be able to document the operations during normal, wet and dry years and form a reasonable basis for making water decisions such as future system improvements, effects of groundwater pumping, etc. Data derived from this survey will be valuable to local water agencies and counties planning for future water needs.

The Departments long term goal is to create a relationship with the Tribal and local agencies where we can obtain and share valuable Land and Water Use information between DWR surveys to assist in local water issues. Everyone is welcome to approach staff to inquire about the survey or provide assistance. ļ€¼

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