Annual Report- 1994
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i US Army Corps of Engineers Omaha District Annual Report- 1994 Tributary Reservoir Regulation Activities {August 1993 - July 1994) Prepared by: Water Control Section Hydrologic Engineering Branch Engineering Division Omaha, Nebraska December 1994 MISSOURI RIVER DIVISION OMAHA DISTRICT SUMMARY OF 1993-1994 I. PURPOSE AND SCOPE ......................................... 1 II. REFERENCES ............................................... 1 Ill. RESERVOIRS IN THE OMAHA DISTRICT ........................... 1 a. Reservoirs with Flood Control Storage .......................... 1 b. Reservoirs without Flood Control Storage . 2 IV. TRIBUTARY RUNOFF ......................................... 3 V. RESERVOIR ACCOMPLISHMENTS ............................... 11 a. Flood Damages Prevented . 11 b. Recreation Usage . 11 VI. RESERVOIR OPERATION ..................................... 11 a. Previous Years Operation (August 1, 1993 through July 31, 1994) . 11 (1) Corps of Engineers Lakes . 11 (a) Bear Creek Reservoir, Colorado . 11 (b) Chatfield Reservoir, Colorado ..................... 18 (c) Cherry Creek Reservoir, Colorado ................. 18 (d) Bowman-Haley, North Dakota .................... 18 (e) Pipestem, North Dakota ......................... 18 (f) Papillion Creek Basin, Nebraska . 19 (g) Salt Creek Basin, Nebraska . 19 (2) Bureau of Reclamation Dams ......................... 19 Jamestown Dam, North Dakota . 19 (b) Proposed Operations .................................... 19 (1) Corps of Engineers . 19 (a) North Dakota . 20 (b) South Dakota ................................ 20 (c) Colorado .................................... 25 (d) Nebraska . 25 (2) Bureau of Reclamation . 25 (a) Canyon Ferry . 25 (b) Tiber ...................................... 26 (c) Yellowtail ................................... 26 (d) Others . 26 VII. MAJOR REGULATION PROBLEMS .............................. 26 a. Water Quality . 26 b. Downstream Channel Capacity . 26 c. Releases for Purposes other than Authorized Project Functions . 27 d. Potential Hazardous Conditions . 27 e. Dam Safety Issues . 27 (1) Corps of Engineers Dams ............................ 27 (a) Cherry Creek Dam . 27 (b) Coldbrook Dam ............................... 27 (2) Bureau of Reclamation Dams . 28 (a) Clark Canyon Dam . 28 (b) Canyon Ferry Dam ............................ 28 (c) Tiber Dam ................................... 28 (d) Boysen Dam ................................. 28 (e) Yellowtail Dam ............................... 28 (f) Heart Butte Dam . 28 (g) Jamestown Dam . 28 (h) Keyhole Dam ................................ 28 (i) Pactola Dam . 29 0) Shadehill Dam . 29 (k) Glendo Dam . 29 VIII. WATER CONTROL MANUALS ................................ 29 IX. DATA COLLECTION PROGRAM AND PROCEDURES ................. 30 a. Collection of Water Control Data . 30 b. Automated Remote Sensors . 30 c. Cooperative Hydrologic Programs ............................ 34 d. Water Quality . 34 e. Sediment . 35 X. FLOODING .................................................. 35 a. Nebraska . 35 b. Iowa ................................................. 37 c. Colorado . 41 d. South Dakota. 41 e. North Dakota . 41 f.M~~a ............................................... ~ g. Wyoming .............................................. 42 XI. WATER CONTROL INITIATIVES ................................. 43 XII. FERC Applications ........................................... 43 XIII. TRAINING AND METHODS . 43 ii TABLES PAGE 1. Percentage of Normal Runoff for August 1, 1993 to July 31, 1994 4-5 2. 1994 Water Year Peak Stages and Discharges 8-10 3. Flood Damages Prevented FY 1994 12-14 4. Recreation Visitation in Hours 15 5. Utilization of Exclusive Flood Storage Zone 16 6. Work Priorities 32 7. Status of Water Control Manuals 33-34 FIGURES 1. Long Term Palmer Drought Severity Maps 1991 and 1992 6 2. Long Term Palmer Drought Severity Maps 1993 and 1994 7 PLATES 1. Pipestem Dam Pool Elevation and Release 21 2. Jamestown Dam Pool Elevation and Release 22 3. Combined Releases for Pipestem and Jamestown Dams 23 4. Unregulated & Actual Observed Flows at Jamestown Gage 24 APPENDIXES 1. Map of Flood Control Dams 2. Project Data Sheets 2-1 3. Regulation Sheets for Past Year iii CORPS OF ENGINEERS PROJECTS: (1) Bear Creek Dam and Lake 3.1 (2) Bowman-Haley Dam and Lake 3.6 (3) Bull Hook-Scott Coulee Dams 3.9 (4) Cedar Canyon Dam (Red Dale Gulch) 3.10 (5) Chatfield Dam and Lake 3.11 (6) Cherry Creek Dam and Lake 3.15 (7) Coldbrook Dam and Lake 3.20 (B) Cottonwood Springs Dam and Lake 3.23 (9) Kelly Road Dam 3.26 (1 O) Westerly Creek Dam 3.27 (11) Glenn Cunningham Dam and Lake 3.28 (12) Standing Bear Dam and Lake 3.31 (13) Zorinsky Dam and Lake 3.34 (14) Wehrspan Dam and Lake 3.37 (15) Pipestem Dam and Lake 3.40 (16) Olive Creek Dam and Lake 3.43 (17) Bluestem Dam and Lake 3.46 (18) Wagon Train Dam and Lake 3.49 (19) Stagecoach Dam and Lake 3.52 (20) Yankee Hill Dam and Lake 3.55 (21) Conestoga Dam and Lake 3.58 iv (22) Twin Lakes Dam and Lake 3.61 (23) Pawnee Dam and Lake 3.64 (24) Antelope Creek Dam and Holmes Park Lake 3.67 (25) Branched Oak Dam and Lake 3.70 (26) Snake Creek Dam and Lake Audubon 3.73 (27) Spring Creek Dam and Lake Pocasse 3.76 NON-CORPS PROJECTS (1) Boysen Dam 3.79 (2) Canyon Ferry Dam 3.82 (3) Clark Canyon Dam 3.85 (4) Glendo Dam 3.88 (5) Heart Butte Dam 3.92 (6) Jamestown Dam 3.95 (7) Keyhole Dam 3.99 (8) Pactola Dam 3.102 (9) Shadehill Dam 3.105 (1 0) Tiber Dam 3.108 (11) Yellowtail Dam 3.112 v This report is the Omaha District's portion of the Missouri River Division's 1993-1994 Annual Report on Reservoir Regulation Activities MISSOURI RIVER DIVISION OMAHA DISTRICT SUMMARY OF 1993-1994 I. PURPOSE AND SCOPE. This annual report summarizes significant tributary reservoir regulation activities and tributary flooding within the geographic boundaries of the Omaha District. The period covered by this report is 1 August 1993 through 31 July 1994 and is referred to as the report period. II. REFERENCES. a. ER 1110-2-1400, 24 April1970. b. ER 1110-2-240, 8 October 1982. c. Missouri River Division Letter, 1 October 1970, subject: Reservoir Regulation Reports. Ill. RESERVOIRS IN THE OMAHA DISTRICT. The Omaha District, Corps of Engineers, civil works boundaries include 414,900 square miles that comprise the Missouri River watershed above Rulo, Nebraska. a. Reservoirs with Flood Control Storage. There are 36 tributary reservoirs with allocated flood control storage covered in this report. The dams are listed on the following page. Included are 25 Corps of Engineers dams and 11 Bureau of Reclamation dams. The locations of these 36 tributary reservoirs are shown in Appendix 1 and pertinent data are presented in Appendix 2. CORPS OF ENGINEERS DAMS 1. Bear Creek Dam, CO 14. Papillion No. 20, NE (Wehrspann) 2. Bowman-Haley Dam, ND 15. Pipestem Dam, ND 3. Bull Hook Dam, MT 16. Salt Creek No. 2, NE (Olive Creek) 4. Cedar Canyon Dam, SD 17. Salt Creek No. 4, NE (Blue Stem) 5. Chatfield Dam, CO 18. Salt Creek No. 8, NE (Wagon Train) 6. Cherry Creek Dam, CO 19. Salt Creek No. 9, NE (Stagecoach) 7. Westerly Creek Dam, CO 20. Salt Creek No. 10, NE (Yankee Hill) 8. Coldbrook Dam, SD 21. Salt Creek No. 12, NE (Conestoga) 9. Cottonwood Springs, Dam, SD 22. Salt Creek No. 13, NE (Twin) 10. Kelly Road Dam, CO 23. Salt Creek No. 14, NE (Pawnee) 11. Papillion No. 11, NE (Glen Cunningham) 24. Salt Creek No. 17, NE (Holmes Park) 12. Papillion No. 16, NE (Standing Bear) 25. Salt Creek No. 18, NE (Branched Oak) 13. Papillion No. 18, NE (Zorinsky) BUREAU OF RECLAMATION DAMS 1. Boysen Dam, WY 7. Keyhole Dam, WY 2. Canyon Ferry Dam, MT 8. Pactola Dam, SD 3. Clark Canyon Dam, MT 9. Shadehill Dam, SD 4. Glendo Dam, WY 10. Tlber Dam, MT 5. Heart Butte Dam, ND 11. Yellowtail Dam, MT 6. Jamestown, ND b. Reservoirs without Flood Control Storage. There are two Corps of Engineers tributary lakes without allocated flood control storage included in this report. Both are subimpoundment of the Missouri River Main Stem Projects and were formed by the construction of relocations for transportation facilities and utilities. Lake Audubon, a subimpoundments of Lake Sakakawea, is located just northeast of Riverdale, North Dakota. Lake Audubon and Snake Creek Pumping Plant were to be major facilities of the Bureau of Reclamation's proposed Garrison Diversion Unit (GDU) Project. Lake Pocasse, a subimpoundment of Lake Oahe, is located near Pollock, South Dakota. The Bureau of Reclamation planned to use this lake as a regulating reservoir for the proposed Pollock-Harried Irrigation Unit. The development of this unit, however, has not materialized. Both lakes are used for fish and wildlife and recreational purposes. Their locations are shown on Appendix 1 and pertinent data are presented in Appendix 2. 2 IV. TRIBUTARY RUNOFF. Tributary flows during the report period were near normal or above normal in most of the basin. Table 1 presents calculated percentages of normal runoff at pertinent locations within the basin. The Long Term Palmer Reports for Drought Severity from years 1991 through 1994 are shown on Figures 1 and 2. Table 2 lists peak discharges at selected gaging stations including many reservoir release control points used by the Omaha District. Areas of extremely low runoff (less than 50% of normal) occurred in the Bear Creek basin and the South Platte River basin above Chatfield Dam in Colorado. Areas of 50% to 70% of normal runoff were the upper Wind River basin in western Wyoming above Boysen Reservoir and the Heart River basin in North Dakota. River basins that experienced