Phoenix Lake Preservation and Restoration Plan

Phoenix Lake

Phoenix Lake Brochure Phoenix Lake is the primary drinking water source for Sonora, Jamestown, Scenic View, and Mono Village, in Tuolumne County’s “gold country.” Constructed in 1852 to support hydraulic mining, the 88-acre lake today is one of several reservoirs in the Tuolumne Utilities District (TUD) distribution system. Phoenix Lake lies three miles northeast of Sonora in a wooded meadow surrounded by alpine hills. The water serves as the principal fill source for CAL FIRE helicopter operations in the Highway 108 corridor. As a scenic aquatic habitat and wetland, Phoenix Lake is also used for non-motorized, non-contact recreation by adjacent homeowners and on a limited basis by the general public.

A loss of one third of Phoenix Lake’s water storage capacity has occurred over the past 100 years.

Project Meetings
Project Update Presentation – Dec. 6, 2016

Meeting Notes – Dec. 6, 2016

The goals of the Phoenix Lake Preservation and Restoration Plan are to develop conceptual plans to:

  • improve water quality,
  • increase water storage,
  • reduce future silt buildup,
  • increase wetlands habitat value and functionality,
  • evaluate public access,
  • improve fire protection and educate property owners surrounding the lake about appropriate land maintenance practices.
  • determine and describe the necessary level of environmental analysis and permitting requirements for potential construction and maintenance projects developed in the conceptual plan.
Phoenix Lake Project PDF Documents File Size
Table of Contents 3.3 mb
Chapter 1 Introduction and Plan Overview 10.5 mb
Chapter 2 Sediment Source Control and Management Plan 10.4 mb
Chapter 3 Lake Preservation & Restoration Concepts 37.4 mb
Chapter 4 Water Quality Monitoring & Improvement Plan 28.9 mb
Chapter 5 Public Access Plan 10.9 mb
Chapter 6 Wildfire Management 1.3 mb
Chapter 7 Regulatory Compliance 588 kb
Tech App 1 1.1 mb
Tech App 2 3.2 mb

This evaluation project is funded by a $100,000 Sierra Nevada Conservancy Grant and $120,000 TUD matching funds for a total budget of $220,000. Horizon Water and Environment was hired as a consultant for the project. The Phoenix Lake Preservation and Restoration Plan has developed conceptual plans for lake restoration (including a lake dredging plan), water quality improvements, wetland habitat improvements, public access, and fire management. Ultimately, the Plan will be used to prepare an engineered project design, environmental review, secure community support and construction grant funding.