Santa Clara Valley Water District 2015 Urban Water Management Plan

Santa Clara Valley Water District | May 1st, 2016

The Urban Water Management Planning Act (UWMP Act) (Division 6 Part 2.6 of California Water Code §10610 - 10656) requires the preparation of an Urban Water Management P

The Urban Water Management Planning Act (UWMP Act) (Division 6 Part 2.6 of California Water Code §10610 - 10656) requires the preparation of an Urban Water Management Plan (UWMP) every five years by water suppliers that provide over 3,000 acre-feet of water annually or serve water for municipal purposes either directly or indirectly to 3,000 or more customers. The Santa Clara Valley Water District (District) meets the definition of an urban water supplier and has prepared UWMPs since 1985. This 2015 UWMP documents important information on water supply, water usage, recycled water, water conservation programs, water shortage contingency planning, and water supply reliability in Santa Clara County. It also serves as a valuable resource for water supply planners and policy makers, and addresses the water supply future of Santa Clara County over the next 25 years. The 2015 UWMP updates and supersedes all previous UWMPs.... The District is an independent special district that provides wholesale water supply, groundwater management, flood protection and stream stewardship. Its service area includes all of Santa Clara County, which is located at the southern end of San Francisco Bay (Figure 3-1). The county encompasses approximately 1,300 square miles and has a population of about 1.9 million. Most water use occurs on the valley floor between the Santa Cruz Mountains to the west and the Diablo Range to the east. Northern Santa Clara County is home to Silicon Valley and the valley floor is highly urbanized. Southern Santa Clara County has some urban development, but much of the land use is still rural and agricultural. Click here for appendices

Santa Cruz Mid-County Groundwater Basin Groundwater Sustainability Plan

Santa Cruz Mid-County Groundwater Basin Groundwater Sustainability Agency | November 21st, 2019

Due to size, this file has been divided Part 1, Part 2, Part 3, Part 4, Part 5

Due to size, this file has been divided Part 1, Part 2, Part 3, Part 4, Part 5

Santa Cruz Mid-County Groundwater Basin Boundary Modification

Soquel-Aptos Groundwater Management Committee | March 17th, 2016

This memorandum presents proposed boundary modifications to Department of Water Resources’ (DWR) Bulletin 118 groundwater basins within the mid-Santa Cruz Count

This memorandum presents proposed boundary modifications to Department of Water Resources’ (DWR) Bulletin 118 groundwater basins within the mid-Santa Cruz County area. These proposed modifications are submitted on behalf of the Soquel-Aptos Groundwater Management Committee (SAGMC), and consist primarily of consolidating four Bulletin 118 basins that make up the shared groundwater resource to be managed by the Groundwater Sustainability Agency (GSA) called the Santa Cruz Mid-County Groundwater Agency that SAGMC member agencies have agreed to form. These modifications will promote sustainable groundwater management by the proposed GSA by consolidating the management area into a single, continuous basin called the Santa Cruz Mid-County Groundwater Basin. The supporting information provided in following sections are presented per the requirements listed in Article 5 of The California Code of Regulations (CCR) Title 23, Division 2, Chapter 1.5, Subchapter 1, which is referenced throughout.

Santa Cruz Mid‐County Basin Groundwater Management Biennial Review and Report Water Years 2015‐2016

Santa Cruz Mid‐County Groundwater Agency | July 18th, 2017

Long‐term overdraft of the basin has led to ongoing risk of seawater intrusion. As a result of long‐term recovery and an acceleration of recovery over the las

Long‐term overdraft of the basin has led to ongoing risk of seawater intrusion. As a result of long‐term recovery and an acceleration of recovery over the last two years, average groundwater levels in Water Year 2016 met the established protective elevations at the most monitoring wells since the wells were installed. Average groundwater levels in Water Year 2016 met established protective elevations at 8 of 13 of the wells. Since five wells have average groundwater levels below established protective elevations, full basin recovery has not been achieved and the basin is still considered in long‐term overdraft. (Figure ES‐ 1). Recovery of the basin and overdraft will be eliminated when coastal groundwater levels rise to protective elevations at all coastal wells. The MGA will also need to reevaluate the established protective elevations for the GSP.

Santa Margarita Groundwater Agency Groundwater Sustainability Plan

Santa Margarita Groundwater Agency | November 17th, 2021

The plan provides the basis for ongoing management of the Basin by SMGWA to both achieve sustainability in the 20-year planning horizon and maintain sustainability over t

The plan provides the basis for ongoing management of the Basin by SMGWA to both achieve sustainability in the 20-year planning horizon and maintain sustainability over the 50-year implementation horizon specified by SGMA. GSP approved by DWR 4/27/23

Santa Rosa Plain Groundwater Sustainability Plan

Santa Rosa Plain Groundwater Sustainability Agency | December 9th, 2021

Due to file size, this document is divided Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10, Part 11, Part 12

Due to file size, this document is divided Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10, Part 11, Part 12

Santa Ynez River Valley Groundwater Basin – Eastern Management Area Groundwater Sustainability Plan

Eastern Management Area Groundwater Sustainability Agency | January 6th, 2022

This GSP describes the EMA physical setting; presents historical, present, and future water budgets; develops quantifiable management objectives that account for the inte

This GSP describes the EMA physical setting; presents historical, present, and future water budgets; develops quantifiable management objectives that account for the interests of the EMA’s beneficial groundwater uses and users; and identifies a group of projects and management actions that will allow the EMA to maintain or achieve sustainability within 20 years of plan adoption. This document also includes the list of references and technical studies, documentation of the stakeholder engagement process used in the development of this plan, and several supporting appendices. The EMA GSA has taken many steps, starting with stakeholder engagement, to complete the GSP in accordance with the requirements of SGMA and related SGMA regulations.

Satellite observations indicate that chia uses less water than other crops in warm climates

Nature Portfolio (Springer Nature) | September 30th, 2024

Satellite-based monitoring of groundwater depletion in California’s Central Valley

Nature Portfolio (Springer Nature) | November 5th, 2019

Range change data, obtained from Synthetic Aperture Radar satellites, form the basis for estimates of aquifer volume change in california’s central Valley. th

Range change data, obtained from Synthetic Aperture Radar satellites, form the basis for estimates of aquifer volume change in california’s central Valley. the estimation algorithm incorporates a function penalizing changes far from known well locations, linking the aquifer volume changes to agricultural, industrial, and municipal pumping within the tulare basin. We show that the range changes are compatible with the hypothesis that the source of aquifer volume changes are variations in effective pressure around documented wells. Specifically, inclusion of the well distance penalty does not degrade the fit to the observations, inversions with and without it both give variance reductions of 99.6%. The patterns of aquifer volume change vary significantly from the drought year, between October 2015 and October 2016, to a wet year in 2017, and into 2018, a year with near average rainfall. The 2.3 million acre-feet of estimated volume reduction, a lower bound on the amount of water extracted from the basin between October 2015 and 2016, agrees with independent estimates of 1.8 and 2.3 million acre- feet. The aquifer volume reduction is also compatible with a loss of 3.1 km3 (2.5 million acre-feet) in groundwater volume derived from Gravity Recovery and Climate Experiment (GRACE) satellite data.

Saving Water and Money through Toilet Leak Detection

Pacific Institute | April 1st, 2024

This report discusses a cross-sector pilot project that deployed toilet leak detection technology in eight affordable multifamily properties in Los Angeles, California in

This report discusses a cross-sector pilot project that deployed toilet leak detection technology in eight affordable multifamily properties in Los Angeles, California in 2023. Periodic droughts, and prolonged drying trends driven by climate change, are reducing the reliability of Los Angeles’ water supplies. Water efficiency and conservation are key strategies to ensure water resilience in the face of these changes.