Difference between revisions of "GCDAMP Glen Canyon Dam"
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− | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;">Updates</h2> | + | ! <h2 style="margin:0; background:#cedff2; font-size:120%; font-weight:bold; border:1px solid #a3bfb1; text-align:left; color:#000; padding:0.2em 0.4em;"> Updates </h2> |
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== '''Glen Canyon Monthly Operational Call''' == | == '''Glen Canyon Monthly Operational Call''' == | ||
− | *[[Media: | + | *[[Media:202406_Information.pdf| June 2024 Operations call]] |
+ | *[[Media:202405_Information.pdf| May 2024 Operations call]] | ||
+ | *[[Media:202404_Information.pdf| April 2024 Operations call]] | ||
+ | *[[Media:202403_Information.pdf| March 2024 Operations call]] | ||
+ | *[[Media:202402_Information.pdf| February 2024 Operations call]] | ||
+ | *[[Media:202401_Information.pdf| January 2024 Operations call]] | ||
+ | *[[Media:202312_Information.pdf| December 2023 Operations call]] | ||
+ | *[[Media:202311_Information.pdf| November 2023 Operations call]] | ||
+ | *[[Media:102023_Information.pdf| October 2023 Operations call]] | ||
+ | *[[Media:September2023_Information.pdf| September 2023 Operations call]] | ||
+ | *[[Media:August2023_Information.pdf| August 2023 Operations call]] | ||
+ | *[[Media:July2023_Information.pdf| July 2023 Operations call]] | ||
+ | *[[Media:June2023_Information.pdf| June 2023 Operations call]] | ||
+ | *[[Media:May2023_Information.pdf| May 2023 Operations call]] | ||
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+ | [[Archived Glen Canyon Monthly Operations Call slides]] | ||
== '''USBR Monthly/Annual Reports''' == | == '''USBR Monthly/Annual Reports''' == | ||
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*[https://www.usbr.gov/uc/water/rsvrs/ops/aop/index.html Annual Operating Plans for Colorado River reservoirs] | *[https://www.usbr.gov/uc/water/rsvrs/ops/aop/index.html Annual Operating Plans for Colorado River reservoirs] | ||
− | == '''Report to Congress Regarding Operations of Glen Canyon Dam'''[https://www.usbr.gov/uc/ | + | == '''Report to Congress Regarding Operations of Glen Canyon Dam'''[https://www.usbr.gov/uc/DocLibrary/reports.html] == |
− | *[https://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2016-2017.pdf | + | *[https://www.usbr.gov/uc/DocLibrary/Reports/GlenCanyonDam/20210500-GlenCanyonDam-ReportCongress-2020-2021-508-UCRO.pdf Report to Congress - Water Year 2020-2021 ] |
+ | *[https://www.usbr.gov/uc/DocLibrary/Reports/GlenCanyonDam/20210400-GlenCanyonDam-ReportCongress-2019-2020-508-UCRO.pdf Report to Congress - Water Year 2019-2020] | ||
+ | *[https://www.usbr.gov/uc/DocLibrary/Reports/GlenCanyonDam/20200600-GlenCanyonDam-ReportCongress-2018-2019-508-UCRO.pdf Report to Congress - Water Year 2018-2019] | ||
+ | *[https://www.usbr.gov/uc/DocLibrary/Reports/GlenCanyonDam/20180800-GlenCanyonDam-ReportCongress-2017-2018-508-UCRO.pdf Report to Congress - Water Year 2017-2018] | ||
+ | *[https://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2016-2017.pdf Report to Congress - Water Year 2016-2017 ] | ||
*[[Media:Years 2015-16 GC Report to Congress FINAL.pdf| 2015-2016 Report to Congress ]] | *[[Media:Years 2015-16 GC Report to Congress FINAL.pdf| 2015-2016 Report to Congress ]] | ||
− | *[ | + | *[https://www.usbr.gov/uc/DocLibrary/Reports/GlenCanyonDam/20150800-GlenCanyonDam-ReportCongress-2014-2015-508-UCRO.pdf 2014-2015 Report to Congress ] |
*[http://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2013-2014.pdf 2013-2014 Report to Congress ] | *[http://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2013-2014.pdf 2013-2014 Report to Congress ] | ||
*[http://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2010-2011.pdf 2010-2011 Report to Congress ] | *[http://www.usbr.gov/uc/envdocs/reports/GCDam/GC-Report-to-Congress2010-2011.pdf 2010-2011 Report to Congress ] | ||
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The Glen Canyon Power Operations Center operators utilize the generation schedule supplied by Western to operate the generating units while giving consideration to efficiency and equipment characteristics. In addition, the generators automatically respond to a “regulation signal” developed and electronically transmitted to the dam by Western for continuous response to power system load and frequency changes. (This is further described later in this paper). [https://www.wapa.gov/regions/CRSP/PlanProject/Pages/glen-canyon-operations.aspx] | The Glen Canyon Power Operations Center operators utilize the generation schedule supplied by Western to operate the generating units while giving consideration to efficiency and equipment characteristics. In addition, the generators automatically respond to a “regulation signal” developed and electronically transmitted to the dam by Western for continuous response to power system load and frequency changes. (This is further described later in this paper). [https://www.wapa.gov/regions/CRSP/PlanProject/Pages/glen-canyon-operations.aspx] | ||
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It was the invocation of emergency exception criteria on April 1st, 1998 which piqued the interest of some AMWG members in Reclamation and Western’s interpretation of the ROD.[https://www.wapa.gov/regions/CRSP/PlanProject/Pages/glen-canyon-operations.aspx] | It was the invocation of emergency exception criteria on April 1st, 1998 which piqued the interest of some AMWG members in Reclamation and Western’s interpretation of the ROD.[https://www.wapa.gov/regions/CRSP/PlanProject/Pages/glen-canyon-operations.aspx] | ||
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+ | *[https://www.usbr.gov/uc/DocLibrary/Memos/20240326-EstablishmentInterimOperatingGuidanceGlenCanyonDamLowReservoirLevels-TechnicalDecisionMemo-508-TSC.pdf Glen Canyon Dam Interim Low Elevation Operational Guidance] | ||
*[[Media:2017 Glen Canyon Operating Criteria Signed.pdf| 2017 Operating Criteria for Glen Canyon Dam]] | *[[Media:2017 Glen Canyon Operating Criteria Signed.pdf| 2017 Operating Criteria for Glen Canyon Dam]] | ||
*[http://ltempeis.anl.gov/documents/docs/LTEMP_ROD.pdf 2016 LTEMP Record of Decision (ROD)] | *[http://ltempeis.anl.gov/documents/docs/LTEMP_ROD.pdf 2016 LTEMP Record of Decision (ROD)] | ||
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*[[Media:1980 GCD Transfer of Functions BOR WAPA.pdf| 1980 memo: Transfer of Functions and Property at Glen Canyon Dam from Reclamation to WAPA]] | *[[Media:1980 GCD Transfer of Functions BOR WAPA.pdf| 1980 memo: Transfer of Functions and Property at Glen Canyon Dam from Reclamation to WAPA]] | ||
*[https://www.usbr.gov/uc/rm/crsp/index.html The Colorado River Basin Project ] | *[https://www.usbr.gov/uc/rm/crsp/index.html The Colorado River Basin Project ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2021-08-19-amwg-meeting/20210819-LawoftheRiverOverview-508-UCRO.pdf Law of the River Overview ] | ||
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+ | '''2023''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-11-08-twg-meeting/20231108-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations and Water Quality] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2023-08-17-amwg-meeting/20230817-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-06-15-twg-meeting/20230615-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations, and Water Quality] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2023-04-13-twg-meeting/20230413-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2023-02-16-amwg-meeting/20230216-GlenCanyonDamOperationsUpperBasinHydrologyWaterQuality-508-UCRO.pdf Glen Canyon Dam Operations and Upper Basin Hydrology and Water Quality] | ||
+ | |||
+ | '''2022''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-10-13-twg-meeting/20221013-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations and Water Quality ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2022-08-18-amwg-meeting/20220818-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations and Water Quality ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-06-16-twg-meeting/20220616-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations and Water Quality ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2022-05-18-amwg-meeting/20220518-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-04-13-twg-meeting/20220413-BasinHydrologyOperationsWaterQuality-Presentation-508-UCRO.pdf Basin Hydrology, Operations, and Water Quality ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2022-02-10-amwg-meeting/20220210-BasinHydrologyWaterQualityOperations-508-UCRO.pdf Basin Hydrology, Water Quality, and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2022-01-13-twg-meeting/20220113-TWGMeeting-BasinHydrologyOperationsWaterQuality-508-UCRO.pdf Basin Hydrology, Operations and Water Quality ] | ||
+ | |||
+ | '''2021''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-06-17-twg-meeting/20210617-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2021-05-19-amwg-meeting/20210519-BasinHydrologyOperation-Presentation-508-UCRO.pdf Basin Hydrology and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-04-14-twg-meeting/20210414-UpdateHydrologyOperationsWaterQualityConditions-508-UCRO.pdf Update on Hydrology, Operations and Water Quality Conditions ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2021-02-11-amwg-meeting/20210211-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2021-01-22-twg-meeting/20210122-BasinHydrologyOperations-508-UCRO.pdf Basin Hydrology and Operations ] | ||
+ | |||
+ | '''2020''' | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2020-10-15-twg-meeting/20201015-OpsHydrologyTWG-508.pdf TWG Basin Hydrology and Operations ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2020-08-20-amwg-meeting/20200820-BasinHydrologyReservoirOperations2020-2021Hydrograph-Presentation-508-UCRO.pdf Basin Hydrology, Reservoir Operations 2020 and 2021 Hydrograph ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2020-08-20-amwg-meeting/20200820-7DReviewReportUpdate.pdf Review of the Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/twg/2020-06-24-twg-meeting/20200624-HydrologyOperationsReservoirRelease-508-UCRO.pdf Hydrology, Operations and Reservoir Release presentation ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2020-05-20-amwg-meeting/20200520-AMWG-HydrologyOperationsReservoirRelease-508-UCRO.pdf Hydrology, Operations and Reservoir Release presentation ] | ||
+ | *[https://www.usbr.gov/uc/progact/amp/amwg/2020-02-12-amwg-meeting/20200212-AMWG-HydrologyOperationsReservoirRelease-Presentation-508-UCRO.pdf Hydrology, Operations and Reservoir Release] | ||
'''2019''' | '''2019''' | ||
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+ | |||
+ | ==How much water can be released at Glen Canyon Dam?== | ||
+ | * 8 generators = 4,000 cfs each = 32,000 cfs <br> (note that there is usually one or two generators down for maintenance at any given time) | ||
+ | * 4 bypass tubes = 3,750 cfs each = 15,000 cfs | ||
+ | * 2 spillways = up to 208,000 cfs [http://www.usbr.gov/lc/region/g4000/AOP2014/AOP14_2nd_Consultation_PPT.pdf] | ||
+ | |||
+ | ==Critical water elevations== | ||
+ | *3715' = dam crest elevation | ||
+ | *3700' = top of spillway gates (3704' with plywood flashboards) | ||
+ | *3648' = spillway crest elevation | ||
+ | *3490' = minimum power pool (to prevent cavitation in the penstocks) | ||
+ | *3470' = penstock elevation (this is the centerline elevation, the penstocks are 15' in diameter) | ||
+ | *3374' = bypass tube elevation (this is the centerline elevation, the bypass tubes are 8' in diameter) | ||
+ | *3370' = reservoir deadpool elevation [http://www.riversimulator.org/Resources/USBR/GCDtechnicalData.pdf] | ||
==How fast do water and waves flow down the Grand Canyon?== | ==How fast do water and waves flow down the Grand Canyon?== | ||
*[https://pubs.usgs.gov/fs/FS-168-97/pdf/fs-168-97.pdf The Colorado River in Grand Canyon: How Fast Does It Flow?] | *[https://pubs.usgs.gov/fs/FS-168-97/pdf/fs-168-97.pdf The Colorado River in Grand Canyon: How Fast Does It Flow?] | ||
Discharge waves move downstream faster than the water. For example, in May 1991, the discharge waves produced by rapidly changing dam releases moved through the canyon in about 1 2/3 days, whereas the water took about 4 1/3 days to travel the 235 miles from Lees Ferry to Gneiss Canyon. | Discharge waves move downstream faster than the water. For example, in May 1991, the discharge waves produced by rapidly changing dam releases moved through the canyon in about 1 2/3 days, whereas the water took about 4 1/3 days to travel the 235 miles from Lees Ferry to Gneiss Canyon. | ||
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+ | *[https://rrfw.org/RaftingGrandCanyon/Tide_Tables?fbclid=IwAR3EArfvBzN5J6oVGVb353fPC-C4Ngo174-7yvcFDssm2PL9Y9qfMp5HiC8 Tide Tables] | ||
== Video of the construction of Glen Canyon Dam == | == Video of the construction of Glen Canyon Dam == | ||
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*[https://www.youtube.com/watch?v=Cpo1UMflJtk Challenge at Glen Canyon (Part 3)] | *[https://www.youtube.com/watch?v=Cpo1UMflJtk Challenge at Glen Canyon (Part 3)] | ||
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Latest revision as of 15:38, 18 June 2024
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Operations of Glen Canyon DamThe LTEMP Record of Decision (ROD) on the operation of Glen Canyon Dam was signed on December 15, 2016. It changed operations at Glen Canyon from the 1996 ROD that implemented the MLFF flow regime.
Maximum non-experimental flows:
Daily range:
Ramp rates:
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Current Status |
Current Operations | Inflow Forecasts and Model Projections |
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