Parameter Viewer

Document ID us-ca-ocst-2026-04-24-2 Title Ocean Standards - CWA §316(b) Regulation URL https://www.waterboards.ca.gov/water_issues/programs/ocean/ Jurisdiction /us/ca Subdomain(s) none Language Status completed Analyzed at 2026-05-12 05:01:26.236802+00:00 Relevance inventory_targeted_fetch

33 Qualitative 0 Quantitative 38 Definitions

Q Qualitative Requirements (33)

Req ID	Category	Intent	Legal Status	Name	Subdomain(s)	Context	Conditions	Confidence
#Q001	administrative	operational	mandatory	Ocean Standards Unit Responsibilities	other	The Ocean Standards Unit is responsible for developing and updating the statewide plans and policies involving marine waters, and providing scientific support and inter-agency coordination regarding marine pollution and resource management.		high
#Q002	monitoring	operational	mandatory	SWAMP Comparability for Discharger Self-Monitoring	wastewater, other	The draft model monitoring amendments would require that all discharger self-monitoring in receiving waters be SWAMP comparable.	Applies to discharger self-monitoring in marine receiving waters.	medium
#Q003	administrative	reporting	mandatory	Public Comment Scope Restriction	other	Only comments regarding updates will be considered.	Applies to the Public Notice for Comments on the November 2025 Annual Update to the TMDL Compliance Plan	high
#Q004	reporting	reporting	mandatory	SMARTS Regulatory Data Collection	other	The Water Board uses the Stormwater Multiple Application and Report Tracking System (SMARTS) for collecting and processing stormwater regulatory data	Applicable to Caltrans MS4 permit reports and regulatory data	high
#Q005	operational	operational	recommended	Recommended Motorist Pollution Prevention Behaviors	other	wipe off brake dust build-up on rims and wheels, keep vehicles clean to prevent residue from washing off, reduce fluid leaks with regular vehicle maintenance, properly dispose of trash and recycling, tarp and secure trash, vegetation and other loads, keep tires properly inflated to prevent wear, and avoid pesticides and fertilizers when rain is forecast.	Recommended behaviors for motorists to prevent storm water pollution in and around the State highway system	high
#Q006	operational	health	recommended	Motorist Pollution Prevention Behaviors	other	wipe off brake dust build-up on rims and wheels, keep vehicles clean to prevent residue from washing off, reduce fluid leaks with regular vehicle maintenance, properly dispose of trash and recycling, tarp and secure trash, vegetation and other loads, keep tires properly inflated to prevent wear, and avoid pesticides and fertilizers when rain is forecast.	Recommended behaviors for motorists to prevent storm water pollution in and around the State highway system	high
#Q007	administrative	reporting	recommended	Stormwater Municipal Permitting Issues Subscription	other	Subscribe to our "Stormwater Municipal Permitting Issues" list under the "Water Quality" section.		high
#Q008	administrative	reporting	mandatory	Large MS4 Permit Requirement	wastewater, other	storm water permits are required for discharges from an MS4 serving a population of 100,000 or more.	MS4 serving a population of 100,000 or more	high
#Q009	operational	operational	mandatory	Small MS4 Permit Condition Continuation	wastewater, other	all permit conditions and requirements will have to continue to be implemented until a new permit is adopted.	If Order is not reissued or replaced prior to expiration date (July 1, 2018)	high
#Q010	administrative	reporting	mandatory	Re-authorization Application Requirement	wastewater, other	If you wish to continue an activity regulated by this Order after the expiration date of this Order, you must apply for and obtain authorization as required by the new permit once it is issued.	Seeking to continue activity after July 1, 2018 expiration	high
#Q011	reporting	reporting	mandatory	Notice of Intent Submission	wastewater, other	once the new permit is adopted by the State Water Board, applicants will be required to submit a Notice of Intent, including all information required by the new permit, at that time.	Upon adoption of new permit by State Water Board	high
#Q012	operational	treatment	mandatory	Phase I SWMP Development and Implementation	wastewater, other	Phase I MS4 permits require the discharger to develop and implement a Storm Water Management Plan/Program with the goal of reducing the discharge of pollutants to the maximum extent practicable.	Phase I MS4 permittees	high
#Q013	prohibition	health	mandatory	Trash Discharge Prohibition	wastewater, aquatic life, recreational water	establish a prohibition on the discharge of trash	Applicable to permitted storm water and other discharges	high
#Q014	monitoring	reporting	mandatory	Trash Monitoring and Reporting Framework	wastewater, other	provide a framework for monitoring and reporting requirements	Implementation of Trash Amendments	high
#Q015	administrative	operational	mandatory	Caltrans Clean Water Act Permitting Compliance	other	subject to the permitting requirements of Clean Water Act section 402(p)	Applies to Caltrans MS4s, maintenance facilities, and construction activities, involving storm water and non-storm water discharges from State owned rights-of-way.	high
#Q016	operational	treatment	mandatory	Small MS4 ASBS Regulatory Compliance	aquatic life, other	ASBS requirements for Small MS4 permittees	Applies to Small MS4 permittees that are ASBS dischargers.	high
#Q017	operational	aesthetic	mandatory	Narrative Water Quality Objective for Trash	other	establish a narrative water quality objective for trash	Governed by the Amendment to the Water Quality Control Plan for Ocean Waters and Part 1 Trash Provisions for Inland Surface Waters, Enclosed Bays, and Estuaries.	high
#Q018	administrative	operational	mandatory	Trash Amendment Compliance Time Schedule	other	set a time schedule for compliance	Applicable to the implementation of Trash Amendments for permitted storm water and other discharges.	high
#Q019	treatment	treatment	mandatory	Trash Implementation Requirements for Dischargers	wastewater, other	provide implementation requirements for permitted storm water and other discharges	Specific to the implementation framework of the statewide Trash Amendments.	high
#Q020	monitoring	operational	mandatory	Diversion Measurement and Data Submission	other	requires diverters who divert more than 10 acre-feet of water per year to measure their diversions and submit the data to the State Water Board.	diverters who divert more than 10 acre-feet of water per year	high
#Q021	reporting	reporting	mandatory	Annual Water Diversion Reporting	other	All diverters are required to complete annual reports each year.		high
#Q022	monitoring	operational	mandatory	Measurement Parameter Requirements	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 to the specific water right	high
#Q023	monitoring	operational	mandatory	Reservoir Drawdown-Refill Recordkeeping	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	Applicable to reservoirs operating in a drawdown and refill pattern	high
#Q024	administrative	reporting	mandatory	Measuring Device Registration	other	On or before January 31, 2027, diverters must register each of their measuring devices in CalWATRS.	Deadline: January 31, 2027	high
#Q025	administrative	operational	mandatory	Alternative Compliance Plan Submission	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).	For diverters unable to measure as frequently or accurately as required	high
#Q026	reporting	operational	mandatory	Measurement Methodology Submission	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.	Deadline: January 31, 2027	high
#Q027	operational	operational	mandatory	Qualified Individual Accuracy Verification	other	a qualified individual must ensure that your diversions are measured accurately.	Required regardless of measurement device or method used	high
#Q028	administrative	operational	mandatory	Raw Device Output Record Retention	other	they must maintain records of the raw device output for at least 10 years.	Applies to general measurement data for WY 2027 and beyond	high
#Q029	reporting	reporting	mandatory	Large Diversion Weekly Submission 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.	For diverters subject to Large Diversion Requirements	high
#Q030	operational	operational	mandatory	Volume Calculation from Measured Values	other	Diverters must then use the measured value to calculate the volume of water diverted.	Applicable when using measuring devices that directly measure parameters other than volume (e.g. flow rate, velocity, elevation).	high
#Q031	monitoring	operational	mandatory	Qualifying Reservoir Measurement Parameters	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).	Reservoirs with capacity greater than 5,000 acre-feet for Water Year 2027 and beyond.	high
#Q032	operational	operational	mandatory	Qualified Individual Certification Duties	other	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.	Applies to Water Year 2027 and beyond.	high
#Q033	operational	operational	mandatory	Alternative Compliance Implementation Duties	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.	When implementing an Alternative Compliance Plan.	high

P Quantitative Requirements (0)

No quantitative requirements.

D Definitions (38)

Req ID	Name	Context	Confidence
#D001	measuring device	Measuring devices can be any devices, including custom or in-house built devices, that directly measure either volume, flow rate, water velocity, or water elevation.	high
#D002	measurement method	Measurement methods are any other way of measuring diversions that do not use a “measuring device” (as defined above) to measure the volume of water diverted under a single water right.	high
#D003	measurement methodology	A measurement methodology that describes how they collect, interpret, and process the raw data from their measuring devices to meet the measurement requirements.	high
#D004	Maximum allowable diversion amount (Permit, License, or Registration)	Maximum volume that is authorized to be diverted annually (often called the “face value”)	high
#D005	Maximum allowable diversion amount (Pre-1914 Statement)	Maximum volume that has ever been diverted in a 12-month period	high
#D006	Maximum allowable diversion amount (Riparian Statement)	Maximum volume that has ever been diverted or is anticipated to be diverted in a 12-month period	high
#D007	Alternative Compliance Plan (ACP)	An alternative compliance plan submitted by any diverter who has a more effective or efficient way to measure their diversions.	medium
#D008	qualified individual	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
#D009	qualifying reservoirs	reservoirs with a capacity greater than 5,000 acre-feet	high
#D010	Alternative Compliance Plan (ACP)	Under the regulation, any diverter who has a more effective or efficient way to measure their diversions may submit an alternative compliance plan (ACP). 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.	high
#D011	Volume Threshold	Where the “Volume Threshold” is defined as follows: For water rights that do not share a point of diversion: if the right only authorizes diversion to aboveground storage, the threshold is based on the capacity of the reservoir; if the right authorizes direct diversion and/or diversion to underground storage, the threshold is based on the maximum allowable diversion amount. For a combination of water rights that share a point of diversion: if all water rights only authorize diversion to aboveground storage, the threshold is based on the capacity of the reservoir; if any water right authorizes direct diversion and/or diversion to underground storage, at the shared point of diversion the threshold is based on the combined maximum allowable diversion amount of all water rights and at non-shared points of diversion the threshold is based on the maximum allowable diversion amount of the individual water right.	high
#D012	California Water Accounting, Tracking, and Reporting System	CalWATRS	high
#D013	Waste Discharge Requirements	WDRs	high
#D014	General Order	General WDRs order for aggregate processing and/or concrete manufacturing facilities	high
#D015	Aggregate and Concrete Order	statewide aggregate and/or concrete waste discharge requirements order	high
#D016	California Water Boards	include the State Water Resources Control Board and nine Regional Boards	high
#D017	State Water Resources Control Board	SWRCB	high
#D018	Ocean Plan	Water Quality Control Plan for Ocean Waters of California	high
#D019	California Thermal Plan	Water Quality Control Plan for Control of Temperature in the Coastal and Interstate Waters and Enclosed Bays and Estuaries of California	high
#D020	Once-Through Cooling Policy	Water Quality Control Policy on the Use of Coastal and Estuarine Waters for Power Plant cooling	high
#D021	Bacteria Amendment	The amendment to the Ocean Plan addressing new bacteria water quality objectives and implementation provisions to protect recreational users from the effects of pathogens in ocean waters of California	high
#D022	Desalination Amendment	The amendment to the Water Quality Control Plan for the Ocean Waters of California addressing Desalination Facility Intakes, Brine Discharges, and to Incorporate Other Non-substantive Changes	high
#D023	Trash Amendments	The amendment to the Water Quality Control Plan for Ocean Waters of California to Control Trash and Part 1 Trash Provisions of the Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California	high
#D024	Reasonable Potential Calculator	A program to determine when effluent limitations are needed.	high
#D025	ASBS	Areas of Special Biological Significance	high
#D026	SWAMP	Surface Water Ambient Monitoring Program	high
#D027	COP	California Ocean Plan	high
#D028	Bulletin 74	sets the minimum standards for water, monitoring, cathodic protection, and geothermal heat exchange wells, with the purpose of protecting California’s groundwater quality.	high
#D029	Bulletin 74 Technical Advisory Committee (TAC)	The Bulletin 74 Technical Advisory Committee (TAC) is made up of 81 representatives from a broad range of sectors and geographic areas of the state, with expertise in all aspects of well permitting, design, construction, maintenance, and destruction.	high
#D030	GHEWs	geothermal heat exchange wells	high
#D031	Public water supply wells	Public water supply wells supply drinking water to 15 or more service connections.	high
#D032	Local Enforcing Agencies (LEAs)	local governments, counties, cities, and some water districts are responsible for enforcing standards that are either equal to or more stringent than our well standards.	high
#D033	Drywells	or “stormwater injection wells”, do fall into the definition of a water well per the Water Code	high
#D034	CCDEH	California Conference of Directors of Environmental Health	high
#D035	CGA	California Groundwater Association	high
#D036	SWRCB-DDW	State Water Resources Control Board-Division of Drinking Water	high
#D037	DTSC	California Department of Toxic Substances Control	high
#D038	DWR	Department of Water Resources	high