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<br />msl, continue releases being made per the last instructions received
<br />for 4 hours. If communications have not been restored after the 4-
<br />hour period, stop all flood releases made through the outlet
<br />works.
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<br />(4) When the pool elevation is above the spillway
<br />crest (elevation 4898.7 feet mal) releases will be made in
<br />accordance with the Bureau of Reclamation's Designers Operating
<br />Criteria and Standing Operating Procedures, as required for the
<br />safety of the structure.
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<br />c. Constraints. In addition to limiting the flow at the
<br />Avondale gage to non-damaging flows (5,000 c.f.s. or less), the
<br />increases in release rates through the conduits for flood control
<br />purposes shall not exceed 500 c.f.s. per hour.
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<br />7-06. Recreation. Recreation is one of the authorized project
<br />purposes. The Pueblo Reservoir has the largest water surface
<br />area within a 75-mile radius. The spacious water surface will
<br />entice its recreation usage for individuals and groups who visit
<br />for a single day or weekends. This use includes picnickers,
<br />campers, boaters, fishermen, hunters, and sightseers. The gen-
<br />eral development of the recreational facilities at Pueblo Dam and
<br />Reservoir is designed to serve this group. See Plate 2-8 for
<br />location of recreation sites.
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<br />7-07. Water Quality.
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<br />a. The surface water in the Arkansas River and. its tribu-
<br />taries above Canon City is generally of excellent quality.
<br />However, the water becomes progressively worse downstream from
<br />Pueblo. The water which is imported from the Fryingpan River
<br />Basin is of excellent quality. The addition of this water to
<br />the Arkansas River water tends to improve the present quality
<br />of the Arkansas River water. The expected quality changes of
<br />the water include a decrease in the bicarbonates due, in part,
<br />to the mixing of the higher-quality west-slope water, and dilu-
<br />tion of pollution concentrations from upstream sources, particu-
<br />larly during low-flow periods. The normal operations of the
<br />dam and reservoir are expected to maintain the water quality
<br />within acceptable standards.
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<br />b. The constraints on controlling water quality are the
<br />lack of water rights and lack of allocated storage for this
<br />purpose.
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