Virginia Mahacek

Senior Geomorphologist


Virginia Mahacek is a fluvial geomorphologist with an extensive background in education and outreach, restoration planning and design, environmental compliance, and natural resource management. She has over 27 years of experience as a technical analyst and project manager of watershed assessments, stream studies, restoration planning, design development, baseline and performance monitoring, alternatives analysis, compliance, and construction oversight. Ms. Mahacek is accomplished in environmental compliance pursuant to the National Environmental Policy Act (NEPA), the California Environmental Quality Act (CEQA), Tahoe Regional Planning Agency (TRPA) regulations, and Federal Energy Regulatory Commission (FERC) licensing. She has served a variety of local, state, tribal, non-governmental and federal lead agencies and on projects of varied spatial scale, technical complexity and regulatory context.

Virginia effectively communicates technical and planning issues with varied agencies and public stakeholders and facilitates planning progress within challenging community and regulatory settings. Her expertise includes natural and human disturbance-responses, climate change, wildfire hazard and risk reduction, and beaver management. She has worked across the western United States, with a focus on Lake Tahoe, the Sierra Nevada, and the Columbia River Basin.


County of Sonoma, Fire Recovery & Resiliency Planning, Sonoma County, California

Lake Tahoe TMDL Phase 2 Technical Studies, Lake Tahoe Basin, California-Nevada

Sierra-Cascade Foothill Region Conservation Plan, Sierra Nevada Range, California

Deer Creek Hills Watershed Assessment, Sloughhouse, California

Incline, Third, and Rosewood Creeks Watershed Assessment, Incline Village, Nevada

Watershed Management Plans – Alameda, San Antonio, and Pilarcitos Creeks, California

Arroyo de la Laguna Geomorphic Assessment and Alternatives, Pleasanton, California

New Melones Lake Resource Management Plan, Stanislaus River, California

Upper Laguna Creek Watershed Plan, Elk Grove, California

Markleeville Creek Floodplain Restoration, Alpine County, California

Bird Track Springs River and Floodplain Restoration Project, La Grande, Oregon

Klein Floodplain Activation Project, Similkameen and Okanogan Rivers, Oroville, Washington

Conservancy Island Side Channel Activation, Okanogan, Washington

Salmon Creek Restoration Plan Phase I, Okanogan, Washington

Ecommunity Place Locatee Lands, Floodplain Wetland Reengagement, Penticton, British Columbia

Middle Reach Rosewood Creek SEZ Restoration, Washoe County, Nevada

Cold Creek Restoration and Fish Passage, South Lake Tahoe, California

San Clemente Dam Seismic Retrofit and Sediment Management, Carmel River, California

Merced River Restoration in Yosemite Valley, Mariposa County, California

Tahoe Pines Campground Restoration, Meyers, California

Meeks Meadow Restoration Project, Meeks Bay, El Dorado County, California

Upper Truckee River Reach 5 Restoration Final Design, South Lake Tahoe, California

Diamond Fork Conceptual Stream Restoration Plan, Diamond Fork River, Utah

Conceptual Stream Restoration Plan and Interim Monitoring, Sixth Water Creek, Utah

Application of Enhanced Stream Corridor Modeling Tools for Adaptive Management of Tahoe Basin Streams, Lake Tahoe Basin, California-Nevada

Heavenly Mountain Resort Monitoring Project, South Lake Tahoe, California/Stateline, Nevada

Virginia/Rocky Stream Bank Stabilization Project, Gardnerville, Nevada

Village at Squaw Valley Specific Plan EIR, Placer County, California

General Plan Updates, Counties of Merced, San Joaquin, and San Benito, California

Sawmill Lake Specific Plan Copperopolis, County, California

Plymouth Pipeline Project, Amador County, California

Upper Truckee River Marsh Restoration, South Lake Tahoe, California

Upper Truckee Marsh, Lower West Side Wetland Restoration, South Lake Tahoe, California

Van Sickle Bi-State Park, Stateline, Nevada/South Lake Tahoe, California


M.A. Physical Geography, University of California, Davis, 1983

B.A., Physical Geography, with Honors, University of California, Davis 1979

A.A. Liberal Arts, with Highest Honors, Santa Rosa Junior College, Santa Rosa 1977