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The Environmental Protection Department (Big Valley EPA) operates to sustain and protect human health, cultural resources and animals, water quality and the overall environment.  This is done through research, planning, applying for funding, and implementing projects that protect the Tribe’s environment. The department has received various sources of funding including General Assistance Program (GAP) towards the building of administrative and individual program capacities. The Tribe has approved ordinances for Pollution, Health and Sanitation, Water Quality, Solid Waste and have upheld the role of environmental protection as a core objective and goal in planning and development.

Activities on Tribal lands are also subject to the provisions of Tribal regulations and policies including the 1995 Big Valley Rancheria Pollution Ordinance, the 1999 Big Valley Rancheria Master Plan, the 2000 Big Valley Rancheria Public Safety Ordinance, the 2004 Big Valley Rancheria Spill Prevention and Countermeasure Control Plan, the 2008 Stormwater Management Program for Konocti Vista Casino, the 2008 Housing Stormwater Management Program, the 2010 Floodplain Management Ordinance for the Big Valley Band of Pomo Indians, the 2015 Big Valley Rancheria Integrated Solid Waste Management Plan, and several federal environmental laws, including the Endangered Species Act (ESA) and Clean Water Act (CWA).


To ensure that human health, culturally important plants and animals, Clear Lake water quality, and the overall environment are healthy and thriving, allowing the continued sustainable use of the environment for economic vitality and cultural heritage protection.


To properly plan for the needs, both current and future for the Tribe, to meet the goals of natural resource protection.


ANNUAL TULE BOAT FESTIVAL - check out our logos, themes and pictures over the years.

Environmental Data Collection

Water Quality Dashboard (65 years)


Current Clear Lake Cyanotoxin Data


Current Air Quality Monitoring Data  


Current Met Station Data 

Total Mercury Results for Clear Lake Fish, 2015

Clear Lake Fish Cyanotoxin Study, 2010-2018


It's important to ensure that Tribal knowledge and values are woven into the decision making process with local state and local agencies.  Our efforts have led to the development of projects including the following: 

Cal-WATCH Project (with Tracking California)

Cal-WATCH Clear Lake Private Systems Drinking Water Study 

Cal-WATCH Recreational Use HABs Survey Results

Cal-WATCH Year 1 Results 

CalWATCH Year 2 Results 

Cal-WATCH Project published in American Waterworks Association Water Science

Cal-WATCH Project published in Centers for Disease Control MMWR

CHARM Project  - A 2 year project with Tracking California and Big Valley Band of Pomo Indians to develop an action plan to address harmful algal blooms and extreme heat in Lake County, California.


Nutrient Management in the Clear Lake Watershed (with Elem Indian Colony, Waterboards, LC Water Resources)

Clear Lake Cyanobacteria Pamphlet (with Elem Indian Colony, LC Water Resources/Environmental Health/Public Health)


Pesticides in Clear Lake Tules Study with CDFA


Sarah Ryan, Environmental Director (707)263-3924 x132 and (707)349-4040 cell

Alix Tyler, Water Resources Program Manager

Richard White, Pollution Prevention Coordinator

Alicia Castellanos, Environmental Specialist

Javier Lupercio, EPA Technician

Environmental Protection Department

Protect the Clear Lake Hitch/Chi!  Here are documents related to the Tribe's efforts to ensure that No Species Go Extinct on Our Watch.

Clear Lake Hitch Rescues (with CDFW)


Here are some topics that we are involved in and are critical for the Lake’s health:​​

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