HOME ABOUT US MEETINGS REPORTS FORMS RESOLUTIONS PROJECTS CONTACT CALENDAR Technical Information Resource Development Assessment(RDA) Report 3-year Water Supply Plan (Draft) Annual Reports Reports are generally available for inspection at Watermaster offices during business hours. Some are available for purchase. Please call for further information. Watermaster 2020-2021 Annual Report Watermaster 2019- 2020 Annual Report Watermaster 2018-2019 Annual Report Watermaster 2017-2018 Annual Report Watermaster 2016-2017 Annual Report Watermaster 2015-2016 Annual Report Watermaster 2014-2015 Annual Report Watermaster 2013-2014 Annual Report Watermaster 2012-2013 Annual Report Watermaster 2011-2012 Annual Report Watermaster 2010-2011 Annual Report Five Year Water Quality and Supply Plan 2021-2026 Five Year Water Quality and Supply Plan 2020- 2025 Five Year Water Quality and Supply Plan 2019 - 2024 Five Year Water Quality and Supply Plan 2018 - 2023 Five Year Water Quaity and Support Plan 2017-2022 Five Year Water Quality and Supply Plan 2016-2021 Five Year Water Quality and Supply Plan 2015-2020 Five Year Water Quality and Supply Plan 2014-2019 Operating Safe Yield Watermaster Rules and Regulations state: "Watermaster shall annually determine the Operating Safe Yield applicable to the succeeding Fiscal Year and estimate the same for the next succeeding four (4) Fiscal Years. Said determination shall be made at the close of the hearing thereon, which shall be commenced at Watermaster's regular meeting in May of each year..." Watermaster Final Determination Operating Safe Yield : FY 2021-22 through 2025-26 Watermaster Preliminary Determination Operating Safe Yield : FY 2021-22 through 2025-26 Watermaster Final Determination Operating Safe Yield: FY 2020-21 through 2024-25 Watermaster Preliminary Determination Operating Safe Yield: FY 2020-21 through 2024-25 Watermaster Final Determination of Operating Safe Yield: FY 2019-20 Through 2023-24 Watermaster Preliminary Determination Operating Safe Yield: FY 2019-20 through 2023-24 Watermaster Final Determination of Operating Safe Yield: FY 2018-19 through 2022-23 Watermaster Preliminary Determination of Operating Safe Yield: FY 2018-19 through 2022-23 Watermaster Final Determination of Operating Safe Yield: FY 2017-18 through 2021-2022 Watermaster Preliminary Determination of Operating Safe Yield: FY 2017-18 through 2021-22 Watermaster Final Determination of Operating Safe Yield: FY 2016-17 through 2020-21 Watermaster Preliminary Determination of Operating Safe Yield: FY 2016-17 through 2020-21 Watermaster Final Determination of Operating Safe Yield: FY 2015-16 through 2019-20 Watermaster Preliminary Determination of Operating Safe Yield: FY 2015-16 through 2019-20 Groundwater Level Contour Maps 11x17" color, downloadable PDF. Earlier dates can be made available upon request. Simulated 2018-19 Groundwater Contours (see: Five Year Plan) July 2014 January 2014 July 2013 January 2013 July 2012 ◄ 1/1 ► Salt and Nutrient Management Plan-Draft Update February 2016, an updated draft of the San Gabriel Basin Salt and Nutrient Management Plan (SNMP) was made available for review. (From the Executive Summary) "The State Water Resources Control Board approved Resolution No. 2009-0011 to adopt the Recycled Water Policy in February 2009. Included in that resolution is a requirement for a Salt and Nutrient Management Plan (SNMP) to be prepared for all groundwater basins. The Main San Gabriel Basin Watermaster is the lead agency for the preparation of the San Gabriel Basin SNMP. The primary stakeholders include Upper San Gabriel Valley Municipal Water District, San Gabriel Valley Municipal Water District, Three Valleys Municipal Water District, the Metropolitan Water District of Southern California, the Los Angeles County Sanitation Districts, and the Los Angeles County Department of Public Works. The SNMP reviewed the geology, hydrology and hydrogeology of the San Gabriel Basin, along with the institutional and management structure for the San Gabriel Basin. TDS, Nitrate, Sulfate, and Chloride were identified as the primary constituents of concern. Sources of loading (precipitation, subsurface inflow, infiltration of applied water, storm runoff and untreated imported water replenishment) and unloading (groundwater pumping and subsurface outflow) were included in a spreadsheet computer model, along with average water quality data for TDS, Nitrate, Sulfate, and Chloride, on an annual basis. Watermaster developed this spreadsheet model as a tool to calculate the impacts of loading and unloading from numerous water supply components..." Download the full Salt and Nutrient Management Plan (SNMP) here. HOME 725 NORTH AZUSA AVENUE, AZUSA, CA 91702 Tel: (626) 815-1300 Fax: (626) 815-1303 Disclaimer © 2016 by Main San Gabriel Basin Watermaster