Mattley Meadow Restoration Project

2 Documents in Project


SCH Number
Lead Agency
Upper Mokelumne River Watershed Authority
Document Title
Mattley Meadow Restoration Project
Document Type
MND - Mitigated Negative Declaration
Project Applicant
Upper Mokelumne River Water Authority
Present Land Use
Unclassified (U), public USFS managed lands; Agricultural Preserve (AP), private inholding

Document Description
The Mattley Meadow Restoration Project (Project) would restore channel-floodplain connectivity in Mattley and Mattley Creek meadows at the headwaters of Mattley Creek, tributary to the North Fork Mokelumne River. The Project would eliminate incised gullies in the meadows. Construction will require one month during the low/no flow period (proposed for September 1-30, 2021). The Project would restore approximately 45 acres of riparian and meadow habitat (32 acres of federal lands, 13 acres on private property), enhancing wetland conditions on 30.86 acres of palustrine wetland (montane meadow), creating 1.61 acres of palustrine open water, and reconnecting 1,926 feet of riverine channel (0.64 acres) with the meadow floodplain. See NOC for full details.

Contact Information
Richard Sykes
Upper Mokelumne River Watershed Authority
15083 Camanche Parkway South
Valley Springs, CA 95252

Phone : (510) 390-4035


38°27'47.46"N 120°7'27.68"W
Bear Valley
Cross Streets
Alpine State Highway 4 and Forest Service Route 7N09
Total Acres
Parcel #
Mattley Creek
8 & 17

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (Meadow Restoration)
Local Action
401 Water Quality Cert
Project Issues
Air Quality Archaeologic-Historic Biological Resources Flood Plain/Flooding Geologic/Seismic Soil Erosion/Compaction/Grading Toxic/Hazardous Water Quality Water Supply Wetland/Riparian
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, North Central Region 2 California Department of Forestry and Fire Protection California Department of Parks and Recreation California Department of Water Resources California Governor's Office of Emergency Services California Native American Heritage Commission California Natural Resources Agency California State Lands Commission Central Valley Flood Protection Board Department of Food and Agriculture Office of Historic Preservation State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights California Department of Transportation, District 10 California Regional Water Quality Control Board, Central Valley Sacramento Region 5


Environmental Document
627A7A07   TMP 1096 K Appendix A_Mattley Meadow Restoration DM signed 5-04-2020   PDF 1291 K Appendix B_MattleyMeadowDesignReport_StanislausNF   PDF 3786 K Appendix C_Stanislaus_MattleyMeadowRestoration_BA_100918   PDF 3482 K Appendix D_2020-02-12_Wildlife_BABE_Mattley_CE   PDF 245 K Appendix E_08ESMF00-2017-F-1659-1 Mattley Meadow Restoration Project_BO   PDF 905 K Appendix F_Botany BE_Mattley Meadow_021820   PDF 218 K Appendix G_2305 Mattley Meadow Restoration Cultural Resources Compliance Letter   PDF 32 K Appendix H_MattleyWetDelNarrRev   PDF 18015 K Appendix I_Mattley Hydrology Report   PDF 801 K Mattley Meadow Initial Study_05 05 2020_FINAL_signed   PDF 8917 K Mattley Meadow NOI   PDF 161 K Mattley Meadow Proposed MND_05 05 2020   PDF 1093 K Mattley Meadow Summary Form_additional pages   PDF 315 K Mattley Meadow Summary_Form_for_Document_Submittal   PDF 593 K
Mattley Meadow NOC w_addl pgs_signed   PDF 605 K
State Comments
2020059012_Caltrans Comment   PDF 136 K 2020059012_RWQCB   PDF 300 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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