Whychus Creek [U.S. Fish and Wildlife Service] Full Details
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Full Details
- Title:
- Whychus Creek [U.S. Fish and Wildlife Service]
- Description:
- Conservation Measure WC - 1 : Whychus Creek Instream FlowsResponsible Permittee:TSIDAffected Species: bull trout, steelheadFor the full term of the DBHCP, and subject to the last paragraph of this conservation measure, Three Sisters Irrigation District (TSID) will pass all water the District has converted to permanent instream water rights on Whychus Creek (currently 31.18 cfs) at its diversion. In addition, TSID will pass all water required under Oregon water law to senior water right holders downstream of the TSID diversion (currently 3 cfs), for a combined minimum flow past the TSID diversion of 34.18 cfs. All future additional conversions of senior water rights to permanent instream flow use will be added to this minimum flow as such rights are converted. TSID will monitor flow in Whychus Creek at OWRD Gage 14076020 whenever TSID is diverting water, and will adjust its diversions as necessary to pass required minimum instream flows on an hourly basis when the flow reaching the TSID diversion is 60 cfs or less. Instream flows when TSID is diverting will be determined by using the proportionality calculator developed by TSID and the Deschutes River Conservancy in 2019. Any updates to the proportionality calculator during the term of the DBHCP that affect flow in Whychus Creek shall be approved in advance of use by the Services. For TSID irrigation rights with priority dates equal to instream rights, water will be shared proportionally between irrigation and instream rights whenever there is insufficient natural flow above the TSID diversion to meet all of the rights. However, TSID will reduce diversions disproportionately if necessary to ensure the instream flow at Gage 14076020 does not drop below 20 cfs (averaged over no more than 60 minutes) while TSID is diverting. This 20 cfs minimum does not include the 3 cfs of senior water that TSID will pass below the TSID diversion, or any future additional conversions of senior water rights to permanent instream use. To help minimize the amount of time when the flow at Gage 14076020 is less than the full instream water right, TSID will continue to manage water "on demand," whereby TSID will only divert and deliver to its patrons when specifically requested by its patrons. Conservation Measure WC - 5: Whychus Creek Diversion Ramping RateWhen the flow in Whychus Creek downstream of TSID's diversion (measured atOWRD Gage 14076020) is 30 cfs or less, the amount of water being diverted will not be increased or decreased more than 5 cfs/hour. When the flow at OWRD Gage 14076020 is between 30 and 50 cfs, the amount of water being diverted will not be increased or decreased more than 10 cfs/hour. TSID may reduce diversions faster than these rates during emergency conditions to maintain human safety and/or protect infrastructure.Wychus Creek is also affected by WC-2, 3, 4, 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