Online Cannabis Compliance Gage Mapping Tool
It is currently the Surface Water Dry Season Forbearance Period. Surface water diversions for cannabis cultivations are NOT allowed during this time. The mapping tool below is currently undergoing maintenance. Maintenance will be completed prior to the beginning of the Surface Water Wet Season Diversion Period. Please check back at that time to see if diversions for cannabis cultivation are authorized at your point of diversion.
Cannabis Policy Compliance Gage Assignments - Mapping Tool Description and Purpose
This webpage is designed to provide cannabis cultivators that divert from surface water with a tool to check whether they may divert for cannabis cultivation on a given day. A summary of some of the main Cannabis Policy’s requirements related to diversion of water for cannabis cultivation is available below.
How to Use the Mapping Tool:
- Navigate to your point of diversion by either entering your address in the search bar or zooming in on the map. (You may need to click on the “OK” box if it’s your first time visiting the mapping tool.)
- Click on the map to identify the location of your point of diversion and a Gage Pop-Up Box will appear with information about whether the DIVERSION IS AUTHORIZED or the DIVERSION IS NOT AUTHORIZED for that day. Cannabis cultivators are required to check if water is available to divert at their point of diversion (e.g., pump inlet) at least daily, prior to diverting.
- If you see “More Information Needed” in the Gage Pop-Up Box, please refer to the Instructions for Using the Cannabis Compliance Gaging Tool below.
- If you see “Contact SWRCB at CannabisWR@Waterboards.ca.gov” in the Gage Pop-Up Box, please refer to the Instructions for Using the Cannabis Gage Mapping Tool.
For more detailed instructions on how to use the Mapping Tool, see the Instructions for Using the Cannabis Compliance Gage Mapping Tool. For more information about the terms (e.g., DIVERSION AUTHORIZED, etc.), please refer to the Definitions of Pop-Up Box Attributes and Fields.
The map below identifies compliance gage assignments for cannabis cultivators with a surface water diversion based on the location of the point of diversion.
Below is a summary of some of the Cannabis Policy Requirements Related to Cannabis Surface Water Divisions. Full text of the requirements below is available here.
- Cannabis cultivators who are diverting surface water are required to check this website for their compliance gage assignment at least daily and prior to diverting water to ensure water is available to divert at that gage (i.e., the prior day’s average flow is greater than the Numeric Flow Requirement at the assigned compliance gage).
- The diversion season is from December 15 of each year to March 31 of the succeeding year, providing the prior day’s daily average flow is greater than the applicable minimum instream flow requirement.
- For the period of November 1 through December 15 of each year, diversion may be authorized under certain circumstances. (Attachment A, Section 3, Requirement 5).
- Cannabis cultivators shall not divert surface water for cannabis cultivation activities at any time from April 1 through October 31 of each calendar year.
- During the 2018 surface water forbearance period, certain exceptions may apply to those who are diverting under a water right that does not include storage. (Attachment A Section 3, Requirement 4).
- The cannabis cultivator shall install and maintain a measuring device(s) for surface water or subterranean stream diversions. Cannabis cultivators shall maintain daily diversion records for water diverted for cannabis cultivation. Daily diversion records shall be retained for a minimum of five years. (Attachment A, Section 2, Requirement 85).
- Under certain circumstances, Retail Water Suppliers who deliver water for cannabis must comply with the instream flow requirements. (Attachment A, Section 3, Requirements 2 and 9).
- Map, List, and Information on Compliance Gages and Associated Tessmann Instream Flow Requirements — This webpage provides the information referenced in Cannabis Policy, Attachment A, Section 4.
- Map of Existing Flow Requirements — This webpage includes an interactive map and provides information on existing flow requirements established through licenses issued by the Federal Energy Regulatory Commission for hydropower projects, Biological Opinions issued by the National Marine Fisheries Service or the United States Fish and Wildlife Service, or water right orders and decisions issued by the State Water Resources Control Board.
Point of Contact
California State Water Resources Control Board
Division of Water Rights
Phone Number: (916) 341-5363