Crooked River [U.S. Fish and Wildlife Service] Full Details
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Full Details
- Title:
- Crooked River [U.S. Fish and Wildlife Service]
- Description:
- Measure CR-1: Crooked River Flow Downstream of Bowman DamResponsible Permittee:OIDSpecies Affected: bull trout, steelhead, sockeye salmonIn coordination with Reclamation, Ochoco Irrigation District (OID) will bypass live flow and/or release OID contracted storage to maintain a daily average flow of 50 cfs1 atOWRD Gage 14080500below Bowman Dam (Hydromet Station PRVO) outside the active irrigation season2whenever all of the following conditions exist: All uncontracted storage available in Prineville Reservoir on the annual day of allocation, up to a maximum of 13,000 acre feet, is held until the end of the active irrigation season2 and thereafter released at a daily average rate of 501 cfs as measured at PRVO. All City of Prineville mitigation storage available in Prineville Reservoir on the annual day of allocation and not required for another mitigation use3, up to a maximum of 5,100 acre feet, is held until December 1 and thereafter released in lieu of uncontracted storage to maintain the daily average flow of 50 cfs as measured at PRVO. The combined total of available uncontracted storage (up to 13,000 acre-feet) and available City of Prineville mitigation storage described herein is insufficient to maintain the daily average flow of 50 cfs as measured at PRVO until the beginning of the next irrigation season. Water that is temporarily leased instream from OID patrons may be used to support the flow of 50 cfs (±5 cfs), except during the period from December 1 through January 31. During the active irrigation season, the DBHCP will not obligate OID or NUID to allow bypass of live flow or release of contracted storage by Reclamation on OID's or NUID's behalf to maintain specific instream flows at PRVO Gage or CAPO Gage. However, OID will not divert stored water at the Crooked River Diversion until the water has been released from Prineville Reservoir and adequate time has elapsed for the water to reach the diversion. In addition, as the operator of Bowman Dam, OID will respond to calls for Prineville Reservoir stored water from other contract holders and begin releasing the requested water within 24 hours. 1 Actual flows in the Crooked River may be ±10% of flows specified in Measure CR 1 due to inherent inaccuracies in flow measuring devices. 2 For purposes of this conservation measure, the active irrigation season on the Crooked River is the period of time during which water is being diverted at the Crooked River Diversion for delivery to OID patrons. This period typically occurs from mid April to mid October, with actual dates varying slightly from year to year. 3 The use of City of Prineville mitigation storage in this way is contingent on approval by Oregon Water Resources Department and subject to any preemptory use of the water. The actual amount of City of Prineville mitigation storage used as described in this measure may be less than the total present in Prineville reservoir on the day of allocation. Measure CR 6: Crooked River Flow Downstream of the Crooked River PumpsResponsible Permittee:NUIDSpecies Affected: bull trout, steelhead, sockeye salmonFor the term of the DBHCP, except for water made available to North Unit Irrigation District (NUID) from Prineville Reservoir, whether under a Temporary Water Service Contract with Reclamation or acquisition from another contract holder, NUID will only divert water at the Crooked River Pumps (RM 27.6) when the minimum daily average flow indicated in Table CR 6 can be maintained, as measured in real time at OWRD Gage 14087300 (RM 27.0) or an alternate gage location established by Oregon Water Resources Department (OWRD) that adequately describes stream flow in the reach downstream of the Crooked River Pumps. Table CR 6. Minimum flows to be maintained downstream of the Crooked River Pumps when NUID is diverting water at the pumps1. Minimum Daily Average Flow (cfs) Month Dry Year Non-Dry Year April 120 181 May 50 95 June 54 86 July 51 61 August 56 68 September 57 114 October 121 151 1 Daily average flows at OWRD Gage 14087300 shall be no less than the specified minimums. NUID will also attempt to keep hourly average flows at or above the specified minimums by manually adjusting diversion rates in response to changes in flow upstream of the pumps, but in recognition of the inherent difficulty in making manual adjustments around the clock the hourly average flows may be up to 20% less than the specified minimums until December 31, 2024. NUID will install equipment at the pumps to automate diversion rate adjustment, and starting no later than January 1, 2025 the daily average and hourly average flows shall both be no less than the specified minimums. For purposes of this measure, Dry Years and Non Dry Years shall exist when OWRD makes a written declaration according to the following metrics: Dry Year Declaration in March - Established only if the following conditions apply: The OWRD's or Bureau of Reclamation's predicted March month end contents of Prineville Reservoir are less than or equal to the 50 percent exceedance level of the contents at March 31 based on all data from the prior 30 years, and Either: The Prineville Reservoir outflow has not exceeded 75 cfs within 30 days of the actual date of OWRD's Non Dry Year/Dry Year declaration, or The Prineville Reservoir outflow has exceeded 75 cfs within 30 days of the actual date of OWRD's Non Dry Year/Dry Year declaration only to supply irrigation demands for downstream users. Non Dry Year Declaration - Established if any of the following conditions apply: The conditions necessary for a Dry Year Declaration do not apply, or When OWRD fails to make any written Dry Year Declaration. OWRD shall maintain discretion to apply and interpret the Dry Year Declaration metric if there is an extenuating circumstance(s) with respect to predicted March month end contents of Prineville Reservoir or its outflows 30 days prior to a Dry or Non Dry Year Declaration so as to target a Dry Year recurrence interval of 3 out of 10 years over a 30 year period. Further, upon request by NUID and the DRC, OWRD may revise the metric, including revisions to the timing for finalizing a Dry Year or Non-Dry Year Declaration, if it is expected that the recurrence interval of a Dry Year Declaration over a 30 year period will change from 3 out of 10 years.The Crooked River is also affected by CR-4, 5, and 7, conservation measures that are not dependent on stream gauging. Please seeDESCHUTES BASIN HCP: Conservation Measures & Monitoring Requirementsfor more information.
- Creator:
- Department of the Interior
- Provider:
- U.S. Fish and Wildlife Service Open Data
- Resource Class:
- Web services
- Temporal Coverage:
- Last modified 2022-02-14
- Date Issued:
- 2021-04-28
- Place:
- Rights:
- The United States Fish and Wildlife Service (Service) shall not be held liable for improper or incorrect use of the data described and/or contained herein. While the Service makes every reasonable effort to ensure the accuracy and completeness of data provided for distribution, it may not have the necessary accuracy or completeness required for every possible intended use. The Service recommends that data users consult the associated metadata record to understand the quality and possible limitations of the data. The Service creates metadata records in accordance with the standards endorsed by the Federal Geographic Data Committee. As a result of the above considerations, the Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of the data. It is the responsibility of the data user to use the data in a manner consistent with the limitations of geospatial data in general and these data in particular. Although these data have been processed successfully on a computer system at the Service, no warranty, expressed or implied, is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This applies to the use of the data both alone and in aggregate with other data and information.
- Access Rights:
- Public
- Format:
- File
- Language:
- English
- Date Added:
- 2023-08-11