7901

• UCREFRP Catalog Number: 7901
• Author: Upper Colorado River Commission.
• Title: Forty-Seventh Annual Report of the Upper Colorado River Commission.
• USFW Year: 1995.
• USFW - Doc Type: Salt Lake City, Utah.
• Copyright Material: NO

3. Summary of Reservoir levels and Contents

Runoff during the year ending September 30, 1995 ranged from 114.0
percent of the 82-year (1914-1995) mean at the Green River station at Green
River, Utah to 142.1 percent of the 82-year mean at the Colorado River
station near Cisco, Utah. The volumes of ~unoff at these stations were
4,399, 700acre-feet and 7 ,608,200acre-feet respectively. Runoff of the San
Juan River station near Bluff. Utah totaled 2,011,500 acre-feet, which was
124.2 percent of the 82-year mean.

Lake Powell's lowest elevation of the 1995 water year occurred on March
4, 1995 when the lake level was at elevation 3,644.59 feet (live content
16,551,700 acre-feet). lake Powell was at its highest point on August 3,
1995 at elevation 3,693.75 feet with a content of 23,332,OOOacre-feet. A
total of 9,285,000 acre-feet was released to the river below Glen Canyon
Dam during the 1995 water year. The 1985-1995 (1 O-year) delivery to the
Lower Basin (measured at Lee Ferry) was 96,555,000 acre-feet.

Lake Mead, on September 30, 1995, contained 20,713,800 acre-feetS
of available storage water at elevation 1,184.28 feet. On September 30,
1995, the live storage of Lake Mead was 1,597,300 acre-feet less than the
storage in Lake Powell.

Table 1 on page 11 shows the Statistical Data for Principal Reservoirs in
the Upper Colorado River Basin. Table 2 on page 12 provides the same
information for the Lower Colorado River Basin reservoirs.

The results of the long-range reservoir operation procedures adopted by
the Secretary of the Interior for Lake Powell, Flaming Gorge, Fontenelle,
Navajo, and Blue Mesa reservoirs in the Upper Colorado River Basin and for
Lake Mead in the Lower Basin are illustrated on pages 14-21 for the 1995
water year.

In water year 1995, there was no equalization of storage as dictated by
Section 602(a) of Public Law 90-537. The drawdown of Lake Powell was
governed by factors other than the equalization criteria.

7 Adjusted for the change in storage in Colorado River Storage Project

Reservoirs.

'Based on April 1, 1967 Capacity Table revised according to
Sedimentation Survey 1963-1964.

10