| #Q001 | monitoring | operational | mandatory | General Diversion Measurement Requirement (WY 2026) | other | In general, those who divert more than 10 acre-feet per year are required to measure their diversions and submit the data to the State Water Board. | Applies to those who divert more than 10 acre-feet per year. | high |
| #Q002 | monitoring | reporting | mandatory | Measurement and Reporting by Water Right | other | Diverters must measure and report their diversion volumes by water right. | | high |
| #Q003 | monitoring | operational | mandatory | Required Measurement Volumes (WY 2026) | other | Diverters must measure each of the following, as applicable:
* Volume of water directly diverted under each water right
* Volume of water diverted to storage under each water right
* Volume of water withdrawn and/or released from storage under each water right | As applicable. | high |
| #Q004 | monitoring | operational | mandatory | Reservoir Drawdown and Refill Measurement | other | For reservoirs that operate in a pattern of drawdown and refill, diverters must also record each of the following:
* Maximum and minimum water surface elevation during each drawdown-refill cycle
* Reservoir volumes corresponding to these elevations
* Dates of these measurements | For reservoirs that operate in a pattern of drawdown and refill. | high |
| #Q005 | monitoring | operational | mandatory | Diversion Measurement Methods | other | Diverters must measure their diversions using a measuring device, measurement method, or combination of devices and/or methods. | | high |
| #Q006 | reporting | reporting | mandatory | Volume Calculation from Measuring Devices | other | Diverters must then use the measured value to calculate the volume of water diverted. | When using measuring devices that directly measure volume, flow rate, water velocity, or water elevation. | high |
| #Q007 | administrative | reporting | mandatory | Measuring Device Registration (January 2027) | other | On or before January 31, 2027, diverters must register each of their measuring devices in CalWATRS. | | high |
| #Q008 | administrative | reporting | mandatory | Prior Submission of Measurement Method | other | Diverters must have previously submitted a measurement method to the Board before February 1, 2026. | When using measurement methods rather than measuring devices. | high |
| #Q009 | monitoring | reporting | mandatory | Alternative Compliance Plan Implementation | other | Diverters who measure and submit data under an ACP must meet their specified measurement requirements as much as possible and explain why they are unable to fully meet all requirements. | When operating under an Alternative Compliance Plan (ACP). | high |
| #Q010 | administrative | reporting | mandatory | Alternative Compliance Plan Registration (January 2027) | other | All diverters pursuing alternative compliance must submit an ACP through CalWATRS on or before January 31, 2027 (regardless of whether they submitted a prior ACP before February 2026). | Applies to all diverters pursuing alternative compliance. | high |
| #Q011 | monitoring | operational | mandatory | Measurement Frequency Guidelines | other | Diverters must measure their diversions monthly, weekly, daily, or hourly, depending on the type and size of diversion. | | high |
| #Q012 | reporting | reporting | recommended | Data File Submission (WY 2026) | other | Diverters should compile measurement data in a data file and submit it as an attachment to their Annual Water Diversion and Use Reports. | | high |
| #Q013 | administrative | reporting | mandatory | Measurement Methodology Registration | other | Each diverter must register their measuring devices in CalWATRS and submit a measurement methodology that describes how they collect, interpret, and process the raw data from their measuring devices to meet the measurement requirements. | | high |
| #Q014 | operational | operational | mandatory | Qualified Individual Requirement | other | Measuring diversions can be complex, therefore a qualified individual must ensure that your diversions are measured accurately. | | high |
| #Q015 | monitoring | operational | mandatory | Who Needs to Measure Diversions (WY 2027 and Beyond) | other | Any diverter with any of the following must measure their diversions and submit the data to the State Water Board: A claimed water right that has a maximum allowable diversion amount greater than 10 acre-feet per year, or A combination of claimed water rights that either share a point of diversion or divert to the same reservoir, if the sum of the maximum allowable diversion amounts of the claimed water rights is greater than 10 acre-feet per year. | Applicable starting Water Year 2027. | high |
| #Q016 | monitoring | reporting | mandatory | General Measurement Parameters (WY 2027 and Beyond) | other | Diverters must measure the following: Date and time of measurement, Volume and rate of water directly diverted, and Volume and rate of water diverted to storage. | Applicable starting Water Year 2027. | high |
| #Q017 | monitoring | reporting | mandatory | Qualifying Reservoir Measurement Requirements (WY 2027 and Beyond) | other | Diverters with water rights to store or withdraw water from reservoirs with a capacity greater than 5,000 acre-feet (called “qualifying reservoirs”) must also measure the following: Volume and rate of water withdrawn from storage (i.e., water removed for immediate or downstream use), and Volume and rate of water released from the reservoir (i.e., total reservoir outflow). | For reservoirs with capacity > 5,000 acre-feet. | high |
| #Q018 | reporting | reporting | mandatory | Measurement Methodology Description (WY 2027 and Beyond) | other | In your Measurement Methodology, you must describe how you converted to volume and flow rate. | When using a measuring device that does not directly measure volume and flow rate. | high |
| #Q019 | administrative | reporting | mandatory | Device Registration and Methodology Submission (January 2027) | other | Diverters must register measuring devices and submit a measurement methodology through CalWATRS by January 31, 2027. | | high |
| #Q020 | reporting | reporting | mandatory | Apportionment of Measurement Data (WY 2027 and Beyond) | other | Diverters must submit their general measurement data (described in the "What to Measure" section above) in the form of a general measurement data file, with data apportioned to individual water rights. | | high |
| #Q021 | reporting | reporting | mandatory | Record Retention for Raw Device Output (WY 2027 and Beyond) | other | Diverters do not need to submit the raw output from their measuring devices in addition to their general measurement data file, but they must maintain records of the raw device output for at least 10 years. | | high |
| #Q022 | monitoring | reporting | mandatory | Large Diversion Parameters Measurement | other | For any claimed water right or point of diversion that meets any of the criteria described above, diverters must measure the following: Date and time of measurement and Volume and rate of diversion (Note: you do not need to distinguish between direct diversions and diversions to storage). | Applicable to large diversions starting October 1, 2026. | high |
| #Q023 | monitoring | reporting | mandatory | Large Diversion Reservoir Parameters | other | Diverters with water rights to store or withdraw water from reservoirs with a capacity greater than 5,000 acre-feet must also measure the following: Total volume of water in the qualifying reservoir and Volume and rate of water leaving the reservoir (including all outflow and water withdrawn for use). | For large diversion reservoirs with a capacity > 5,000 acre-feet. | high |
| #Q024 | reporting | reporting | mandatory | Submitting Large Diversion Measurement Data Frequency | other | In general, diverters need to submit their large diversion submissions on a weekly basis, with a lag time of no more than 7 days between the most recent measurement and the submission date. | Applicable to large diversions. | high |
| #Q025 | reporting | reporting | mandatory | Large Diversion Submission Method (Beginning October 2027) | other | Beginning October 1, 2027, diverters must submit their large diversion submissions in one of the following ways: Using a standardized data file template provided by the State Water Board (templates will be available in CalWATRS), Directly transmitting their large diversion submission to CalWATRS, or Posting their large diversion submission to a website approved by the Deputy Director... | Beginning October 1, 2027. | high |
| #Q026 | operational | operational | mandatory | Qualified Individual Accurate Measurement Assurance | other | A qualified individual must ensure that diversions are measured accurately. Qualified individuals are responsible for installing and verifying the accuracy of measuring devices and certifying that measurement methodologies and alternative compliance plans meet regulatory requirements. | | high |
| #Q027 | reporting | reporting | mandatory | Alternative Compliance Plan Deficiencies Statement | other | Diverters must fulfill as many requirements of the regulation as they can, and describe in their ACP which requirements they are unable to meet and what they proposed to do instead. Diverters with ACPs must still submit measurement data. | When operating under an Alternative Compliance Plan. | high |
| #Q028 | administrative | operational | mandatory | Updated ACP Submission Deadline | other | Diverters must submit an updated ACP (based on the updated requirements), on or before January 31, 2027. | For ACPs submitted before February 1, 2026. | high |
| #Q029 | administrative | operational | mandatory | New ACP Submission Deadline | other | Diverters wishing to submit a new ACP must do so according to the updated requirements of the revised regulation. They must submit their ACP to the Board on or before January 31, 2027 or before implementing the ACP, whichever is later. | For ACPs submitted on or after February 1, 2026. | high |
| #Q030 | administrative | unknown | guidance | Thermal Plan Exception Authority | wastewater, other | Regional Boards may, in accordance with Section 316(a) of the Federal Water Pollution Control Act of 1972 and subsequent federal regulations [collectively termed the Clean Water Act] including 40 CFR 122, grant an exception to Specific Water Quality Objectives in this Plan. | In accordance with Section 316(a) of the Federal Water Pollution Control Act of 1972 and subsequent federal regulations including 40 CFR 122 | high |