Okla. Admin. Code § 252:740-17-2
Current through Vol. 41, No. 19, June 17, 2024
Section 252:740-17-2 - Regulatory flows(a) The flow in the receiving stream, Qu, shall be deemed to be the greater of the 7Q2 or 1 cfs. If the 7Q2 is unknown, then Qu shall be deemed to be 1 cfs.(b) For industrial dischargers with adequate data as determined by the permitting authority, the effluent flow, Qe, shall be deemed to be the highest monthly averaged flow over the previous two years. For all other discharges, the effluent flow shall be deemed to be the design flow.(c) Provided, in stream segments where dams or other structures have substantially affected the historic flow regime of the stream segment, including but not limited to the portions of the Verdigris and Arkansas Rivers constituting the McClellan-Kerr Arkansas River Navigation System, the appropriate regulatory low flow in the receiving stream, Q u, shall be as determined on a site-specific basis pursuant to properly designed and implemented hydrologic study approved by the permitting authority and DEQ.Okla. Admin. Code § 252:740-17-2
Adopted by Oklahoma Register, Volume 40, Issue 6, December 1, 2022, eff. 10/25/2022Adopted by Oklahoma Register, Volume 40, Issue 24, September 1, 2023, eff. 9/15/2023