1242.1.
The diversion of floodflows for groundwater recharge does not require an appropriative water right if all of the following conditions are met:(a) (1) A local or regional agency has taken the following actions:
(A) Made a declaration that diversion of floodflows for groundwater recharge from a delineated stretch of waterway within its jurisdiction is in accordance with one of the following:
(i) An adopted local plan of flood control pursuant to Section 8201.
(ii) An applicable general plan
updated within the previous eight years that considers flood risk.
(iii) A county emergency operations plan.
(B) Has given notice via its internet website, electronic distribution list, emergency notification service, or another means of public notice, that a delineated area within the local or regional agency’s jurisdiction is at imminent risk of flooding and inundation of land, roads, or structures.
(2) As used in this section, “floodflow” means any of the following:
(A) If a waterbody is subject to a defined flood stage, flows in excess of flood stage if actions are necessary to avoid threats to human health and safety.
(B) (i) Except as provided in clause (ii), if a waterbody is not subject to a defined flood stage, surface water escaped from, or likely to imminently escape from, a channel or waterbody causing or threatening to cause inundation of residential or commercial structures, or roads needed for emergency response. Likely imminent escape from a channel or waterbody shall be demonstrated by measured flows projected by the local or regional agency to be in excess of the maximum design capacity of a flood control project, if that project is present and the maximum design capacity is readily available information.
(ii) This subparagraph does not apply to flows that inundate wetlands, working lands, or floodplains, events that constitute a “design flood,”
groundwater seepage, or waters confined to a “designated floodway.”
(C) If flows would inundate or are projected by the local or regional agency to inundate ordinarily dry areas in the bed of a terminal lake to a depth that floods dairies and other ongoing agricultural activities, or areas with substantial residential, commercial, or industrial development.
(3) As used in this subdivision, “imminent” means a high degree of confidence that a condition will begin or is projected to begin
within the next 15 days.
(b) (1) The diversions cease when the flood conditions described in the public notice provided pursuant to subdivision (a) have abated to the point there is no longer a risk of flooding and inundation of land, roads, or structures downstream of the point of diversions, as determined by the local or regional agency making the diversion. Diversions shall cease no later than 90 days after commencing, unless they are renewed.
(2) A local or regional agency may renew a diversion pursuant to paragraph (1) for an additional 30 days by notifying the board of its intention to continue diverting 15 days before its expiration.
(c) Any water diverted is not diverted to, and will
not be applied to, any of the following:
(1) Any barns, ponds, or lands where manure or waste from an animal facility that generates waste from the feeding and housing of animals for more than 45 days per year in a confined area that is not vegetated are applied.
(2) Any agricultural field that has been identified as an outlier with respect to nitrogen application by any of the following:
(A) The board.
(B) The appropriate regional board.
(C) An agricultural coalition charged with implementation of the Irrigated Lands Regulatory Program.
(3) Any area that could cause damage to critical levees, infrastructure, wastewater and drinking water systems, drinking water wells or drinking water supplies, or exacerbate the threat of flood and other health and safety concerns.
(4) Any area that has not been in active irrigated agricultural cultivation within the past three years, including grazing lands, annual grasslands, and natural habitats. This limitation does not apply to facilities already constructed for the purpose of groundwater recharge or managed wetlands.
(d) With respect to diversions from water tributaries to the Sacramento-San Joaquin Delta (Delta), water rights holders are not making releases of stored water or reoperating facilities to provide flow for the purposes of meeting water quality control plan
or endangered species requirements in the Delta at the time of the diversion. In addition to the other prerequisites in this section, water may be diverted under this section only when the Delta is in excess conditions without restrictions pursuant to the Agreement between the United States of America and the State of California for Coordinated Operation of the Central Valley Project and the State Water Project, as amended. The diverter shall monitor conditions daily using the Delta Operations Summary report published on the internet website of the Department of
Water Resources to determine whether the Delta is in excess conditions without restrictions.
(e) The diversion of floodflows for groundwater recharge uses the following as part of the diversion:
(1) Either existing diversion infrastructure or temporary pumps.
(2) Existing groundwater recharge locations, where available.
(3) No new permanent infrastructure or permanent construction.
(4) For diversions directly from rivers or streams, protective screens on temporary pump intakes to minimize the impacts of diversion to fish and other aquatic life. Those screens shall be constructed of any
rigid material, perforated, woven, or slotted, that provides water passage while physically excluding fish. The screen face shall be parallel to the flow and adjacent to the water’s edge. The upstream and downstream transitions to the screen structure shall be designed and constructed to minimize eddies upstream of, in front of, and downstream of the screen, while minimizing entrainment to the degree feasible. Prior to implementing this paragraph, the Department of Fish and Wildlife shall conduct at least one public workshop to review recommended design parameters and ranges of scenarios for deployment and use of protective screens. These recommendations and any other guidelines provided by the Department of Fish and Wildlife on the implementation of this paragraph are not subject to the Administrative Procedure Act (Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of
the Government Code).
(f) The entity making the diversion for groundwater recharge does not claim any water right based on that diversion and recharge, and any diversion pursuant to this section is not evidence in support of a subsequently filed standard water right application for the same or similar project or against modification or development of an existing appropriative water right.
(g) (1) The entity making the diversion for groundwater recharge files all of the following with the board and with any applicable groundwater sustainability agency, as defined in Section 10721, for the basin:
(A) A notice that provides the information specified in subparagraphs (A) to (C), inclusive,
of paragraph (2), 48 hours before whenever feasible, and in no event later than 48 hours
after, initially commencing diversion of floodflows for groundwater recharge.
(B) A preliminary report no later than 14 days after initially
commencing diversion of floodflows for groundwater recharge.
(C) A final report no later than 15 days after diversions cease. The final report shall contain information, if applicable, describing the forecasting models used to determine a likely imminent escape of surface water pursuant to subdivision (a). This description shall include any publicly available data used for these models. The final report shall also include a description of the methodology used to determine the abatement of flood conditions. Additionally, the report shall include an explanation of any diversion renewals, if applicable.
(2) The preliminary and final reports shall do all of the following:
(A) Identify the entity making the
diversion for groundwater recharge.
(B) Provide the Global Positioning System (GPS) coordinates for the point of diversion, a map identifying the approximate area inundated by the floodflows, and the corresponding assessor parcel numbers.
(C) Identify when diversions of floodflows to groundwater recharge commenced, and, for final reports, when diversions ceased.
(D) Provide an estimate, as of the report’s date, of the amount of floodflows diverted for groundwater recharge.
(h) Temporary floodflow diversions pursuant to this section are consistent with the most junior priority relative to all water rights holders in the watershed and shall not injure a
prior water rights holder. This section does not apply to temporary floodflow diversions that are not consistent with this requirement.
(i) The diversions are commenced before June 1, 2032. This section does not apply to diversions commenced on or after June 1, 2032.
(j) This section does not diminish or alter the authority of the board to administer or enforce water rights.