FLOOD02643

• County: Denver
• Community: Northeastern Colorado
• Stream Name: South Platte and Tributaries
• Basin: South Platte
• Title: Post Flood Report South Platte Floods of May-June 1973
• Date: 7/1/1974
• Prepared For: State of Colorado
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Flood Documentation Report

1'ollowing period. The maxilllUll1 discharge 1'rom Glendo Dam was
9,638 cubic feet per second On 7 June. The resulting discharge
passing Tri-State Dam, which is located near the Nebraska State
line, was about 6,900 cubic filet per second. This was due to
irrigation diversions in the :reach between Glendo Reservoir and
Tri-State Dam. Table 18 presllnts a SUllllD8.ry of Reservoir Regulation
Orders 1'or Glendo Dam.

Table 18
SUMMARY OF RESERVOIR REGULATION ORDERS
GLmlOO DAM

73-1 9 May - Maintain 5,000 c. 1'. s. at the State Line
Gaging Station
73~2 - 14 May - Maintain 6,000 c.1'.s. at the State Line
Gaging Station
73-3 - 18 May - Maintain 7,000 c.1'.s. at the State Line
Gaging Station
73-4 - 22 May - Release 7,000 c. f. s. from Glendo Dam
73-5 - 23 May - Release 7,500 c.f.s. 1'rom Glendo Dam
73-6 - 24 May - Release 8,000 c.1'.s. from Glendo Dam
73-7 - 28 May - Release 8,500 c.f.s. 1'rom Glendo Dam
73-8 - 30 May - Release 9,000 c.f.s. from Glendo Dam
73-9 - 31 May - Maintain 8,000 c.1'.s. at the State Line
Gaging Station
73-10 - 11 Jun - Maintain 7,500 c.f.s. at the State Line
Gaging Station
73-11 - 15 Jun - Maintain 7,000 c. f. s. at the S'tate Line
Gaging Station
73-12 - 17 Jun - Maintain 6,500 c.1'.s. at the State Line
Gaging Station
73-13 - 22 Jun - Maintain 6,000 c.f.s. at the State Line
Gaging Station
73-14 - 28 Jun - Maintain 5,000 c. f. s. at the State Line
Gaging Station
73-15 - 2 Jul - Maintain 4,000 c.f.s. at the State Line
Gaging Station

e. Glendo Reservoir levels. The Glendo Reservoir storage
level normally reaches the low point of the year at the end of
the irrigation season, about 30 September. The reservoir
storage level then increases until the peak inflow of the
1'ollowing season is reached, in Mayor June. In 1973, the
reservoir storage had reached 419,015 acre-feet, elevation
4625.7 1'eet m.s.!., on 5 Mar~h, when releases were started.
The reservoir storage level ~ontinued to rise slowly, then

38