Guenoc Water Rights Modification Project

9 Documents in Project


SCH Number
Lead Agency
State Water Resources Control Board
Document Title
Guenoc Water Rights Modification Project
Document Type
FIN - Final Document
Present Land Use
Agriculture, Rural Lands, and Rural Residential (Lake County); Agriculture, Watershed and Open Space (Napa County)
Document Description
Magoon Estate Limited owns the Guenoc Ranch (hereafter Guenoc). Currently 1,819 acres are irrigated, including 367 acres of vineyard and 1,452 ac res of irrigated pasture and forage crop. Water is stored in multiple reservoirs under water right License 2141, 2141, 6334, 9939, 10421, 10422, 13414 and Permits 16860A, 16860C and 16861. Water is also directly diverted under License 2142. Guenoc has petitioned the State Water Resources Control Board to expand the place of use to 4,611 acres under Permits 16860A and 16860C and Licenses 9939 and 13414. Guenoc seeks to expand the place of use to 6,847 acres under the remaining rights.

Contact Information

Katherine Mrowka
Agency Name
State Water Resources Control Board
Contact Types
Lead/Public Agency


Lake, Napa
Cross Streets
Butts Canyon Road
Total Acres
Parcel #
multiple lake/napa
Putah Creek, Bucksnort Creek, Butcherknife Creek, Routan Creek, Cassidy Creek
Other Location Info
City/Nearest Community: Middletown
Other Information
Sec: multiple

Notice of Completion

Local Actions
Water Rights
Project Issues
Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Population/Housing, Public Services, Schools/Universities, Transportation, Vegetation, Wetland/Riparian, Wildfire, Wildlife
Reviewing Agencies
Cal Fire, California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 1 (DOT), California Department of Transportation, District 4 (DOT), California Highway Patrol, California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Division of Water Quality

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613.

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