SGMA - Depletions of Interconnected Surface Water
The Depletions of Interconnected Surface Water (ISW) dataset has been established to provide technical resources in support of Groundwater Sustainability Agencies (GSAs) as they develop and update their Groundwater Sustainability Plans (GSPs) under the Sustainable Groundwater Management Act (SGMA). The Department of Water Resources will post information and resources here, including three technical papers which provide informational resources to help identify, understand, and communicate the nature, occurrence, and estimation of depletions of ISW.
Data files
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Paper 1 Depletions of Interconnected Surface Water: An Introduction This paper is the first of a three-paper series on interconnected surface water (ISW) and depletions of ISW published by the California Department of Water Resources (DWR). The series aims to provide Groundwater Sustainability Agencies (GSA) and the California water resources community with informational resources to help identify, understand, and communicate the nature, occurrence, and estimation of depletions of ISW. | PDF | 02/28/24 | |
Paper 2 Techniques for Estimating Interconnected Surface Water Depletion Caused by Groundwater Use This paper is the second of a three-paper series on interconnected surface water (ISW) and depletions of ISW published by the California Department of Water Resources (DWR). The series aims to provide Groundwater Sustainability Agencies (GSA) and the California water resources community with informational resources to help identify, understand, and communicate the nature, occurrence, and estimation of depletions of ISW. | PDF | 09/21/24 | |
Paper 3 Examples for Estimating Interconnected Surface Water Depletion Caused By Groundwater Use This paper is the third of a three-paper series on interconnected surface water (ISW) and depletions of ISW published by the California Department of Water Resources (DWR). The series aims to provide Groundwater Sustainability Agencies (GSA) and the California water resources community with informational resources to help identify, understand, and communicate the nature, occurrence, and estimation of depletions of ISW. | PDF | 09/21/24 | |
Interconnected Surface Water Papers Cover Letter This letter from Deputy Director Paul Gosselin introduces concepts described by the interconnected surface water papers, including a few key points to aid the readers. If readers have any issues with the accessibility of this PDF, please e-mail sgmps@water.ca.gov. | PDF | 09/21/24 |