BOARD00935

• Board Meeting Date: 9/5/1968
• Description: Agenda or Table of Contents, Minutes, Memos
• Board Meetings - Doc Type: Meeting

6080

Silver Jack Dam is concentrating his efforts
on concrete work this year. ,The outlet works
intake structure, conduit, stilling basin,
and outlet channel have been completed, and
construction work is now centered on the
spillway structure. It has been necessary
to modify our original spillway design due
to foundation conditions. The extremely
rainy weather of the past month has handi-
capped all phases of the contractor's work.
He plans to place only about 300,000 cubic
yards of earth and rock fill for the dam
embankIDent this year, then to mobilize next
year to complete all embankment operations
for the dam before the 1969 winter shutdown.

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Work was completed in July on the outlet
works and spillway stilling basin repairs
at,Navajo Dam.

Going on to the paonia Project, we expect
to issue specifications during September for
rehabilitating three reaches of Colorado
Highway No. 133 adjacent to the spillway at
paonia Dam and along the reservoir shoreline.
This work should materially reduce the extra-
ordinary maintenance problem that has con-
fronted the colorado Department of Highways
since the relocated roadway was placed in
service. The Bureau will perform the earth-
work and slope stabilization for the remedial
work and the Highway Department will place the
bituminous road surfacing.

Under CRSP reservoirs, the 1968 snow-
melt runoff in the Upper Colorado River Basin
for the April-July period was about 7,250,000
acre-feet, or about 85 percent of the long-
time average for this period. We estimate
that the total runoff for the water year
which ends September 30, 1968, will be about
10.6 million acre-feet, which is also about
85 percent of normal. The deposition of this
total runoff will be about as follows:

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