Toledo Bend
Bi-State
Alliance

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OPERATING GUIDE RULE CURVE
HYDRO-ELECTRIC POWER PLANT, TOLEDO BEND DAM




Oct. 6, 1976
MONTH RESERVOIR STAGE

FT. MSL
PLANT OPERATION COMMENTS
January Below 168.5 No Pwr. generated *
Above 168.5 Up to full capacity
February Below 169.0 No Pwr. generated *
Above 169.0 Up to full capacity
March Below 169.5 No Pwr. generated *
Above 169.5 Up to full capacity
April Below 170.0 No Pwr. generated *
Above 170.0 Up to full capacity
May ANY STAGE Use 113,000 Ac.-Ft. (3,767Ac-Ft/Day)
0.61 Feet/Mo
*
Above 172.0 Up to full capacity
June ANY STAGE Use 115,000 Ac.-Ft. (3,833Ac-Ft/DAy)
0.62 Feet/Mo
*
Above 172.3 Up to full capacity
July ANY STAGE Use 270,000 Ac.Ft. (8,710Ac-Ft/Day)
1.45Feet/Mo
*
Above 172.5 Up to full capacity
August ANY STAGE Use 290,000 Ac.-Ft. (9,350Ac-Ft/Day)
1.57 Feet/Mo
*
Above 172.0 Up to full capacity
Sept.1-30 ANY STAGE Use 270,000 Ac.-Ft. (8,710Ac-Ft/Day)
1.45 Feet/Mo
Sept. 1-15 Above 171.0 Up to full capacity *
Sept. 16-30 Above 170.0 Up to full capacity *
Oct.thru. Dec. Below 168.0 No Pwr. generated
*
Above 168.0 Up to full capacity
* Full capacity is 30,000 Ac.-Ft./ Day (930,000 Ac.-Ft./mo.).
This rate will lower the lake 5.0 Ft.in one month(1.0 Ft.in 6 days).

TOTAL RELEASE AT ANY STAGE DURING MAY THRU SEPT------5.70 FEET

NOTES:

  • Maximum turbine discharge capacity is 30,000 ac-ft/day
  • Release 100 cu.ft./sec (cfs) from storage when power plant is shut down.
  • Releases will be in quantities sufficient to provide a minimum average monthly flow at Rulif, Texas of 1,500 cfs during the 7 month period of October through April and a 3,000 cfs during the 5 month period May through September.
  • When pool stage is at or above 172.5 and the inflow is greater than power plant capacity, operate spillway in accordance with "Guide on Spillway Gate Operations".
  • Authorities will notify Companies as to flow conditions in the Sabine River as required in Section 5.07 of the Power Sales Agreement.
  • Control stages set forth above are to be maintained only to the extent possible when making releases through the Power Plant.
  • Spillway gates are to be opened only when stages specified in the"Guide to Spillway Gate Operation" are reached.
  • During prime power season when stage of Lake is near limit, maintain close watch on inflow and make releases of secondary power generation to avoid spillway releases, if possible. Releases to be determined based on best judgment--considering upstream conditions and stages at Rulif, and inflows below the dam.
  • Generating schedule to be approved by the Authorities prior to Plant operation.
  
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areas of Louisiana and Texas, always go to  toledo-bend.com
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