Tuolumne County regulates stormwater through its grading ordinance and development review process. The Engineering Division reviews projects for drainage, erosion control, and stormwater management compliance.
Tuolumne County's Engineering and Development Division reviews development projects for compliance with stormwater management requirements. While the county is not subject to the same MS4 NPDES permits as larger urban jurisdictions, development projects must address stormwater runoff, erosion control, and drainage as part of the grading permit process. The county's mountainous terrain and seasonal precipitation (October-April) create significant stormwater management challenges. Projects must demonstrate that post-development runoff does not exceed pre-development levels. Best Management Practices (BMPs) are required during construction. The county's watershed drains primarily into the Tuolumne River system, which feeds Hetch Hetchy Reservoir (San Francisco's water supply).
Grading without permit: stop work order. Failure to implement erosion control BMPs: project condition violation.
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Tuolumne County, CA
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Tuolumne County, CA
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Tuolumne County, CA
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Tuolumne County, CA
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Tuolumne County, CA
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Tuolumne County, CA
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