GENERAL36047

• Permit No: C1981033
• IBM Index Class Name: General Documents
• Doc Date: 12/11/2001
• Doc Name: FEDERAL LEASE COC-42481 PART 6 OF 8
• From: BLM
• To: OSM
• Permit Index Doc Type: Other Permits
• Media Type: D
• Archive: No

• Colorado. Moffat County. The Yampa River and its 100-year floodplain
from the State Highway 394 bridge in T. 6 N., R. 91 W., section 1
(6th Principal Meridian) to the confluence with the Green River in
T. 7 N., R. 103 W., section 28 (6th Principal Meridian).
Utah. Uintah. Carbon. Grand. Emery. Wayne, and San Juan Counties: and
Colorado. Moffat Countv. The Green River and its 100-year floodplain
from the confluence with the Yampa River in T. 7 N., R. 103 W.,
section 28 (6th Principal Meridian) to the confluence with the Colorado
River in T. 30 S., R. 19 E., section 7 (Salt Lake Meridian).
Colorado. Rio Blanco County: and Utah. Uintah County. The White River
and its 100-year floodplain from Rio Blanco Lake Dam in T. ] N.,
R. 96 W., section 6 (6th Principal Meridian) to the confluence with the
Green River in T. 9 S., R. 20 E., section 4 (Salt Lake Meridian).
Colorado. Delta and Mesa Counties. The Gunnison River and its 100-year
floodplain from the confluence with the Uncompahgre River in T. 15 S.,
R. 96 W., section 11 (6th Principal Meridian) to the confluence with the
Colorado River in T. 1 S., R. 1 W., section 22 (Ute Meridian).
Colorado. Mesa and Garfield Counties; and Utah. Grand. San Juan. Wavne.
and Garfield Counties. The Colorado River and its 100-year floodplain
from the Colorado River Bridge at exit 90 north off Interstate 70 in
• T. 6 S., R. 93 W., section 16 (6th Principal Meridian) to North Wash,
including the Dirty Devil arm of Lake Powell up to the full pool
elevation, in T. 33 S., R. 14 E., section 29 (Salt Lake Meridian).
New Mexico. San Juan County: and Utah, San Juan County. The San Juan
River and its 100-year floodplain from the State Route 371 Bridge in
T. 29 N., R. 13 W., section 17 (New Mexico Meridian) to Neskahai Canyon
in the San Juan arm of Lake Powell in T. 41 S., R. 11 E., section 26
(Salt Lake Meridian) up to the full pool elevation.
Biolaov
4
The life-history phases that appear to be most critical for the Colorado
squawfish include spawning, egg fertilization, and development of larvae
through the first year of life. These phases of Colorado squawfish
development are tied closely to specific habitat requirements. Natural
spawning of Colorado squawfish is initiated on the descending limb of the
annual hydrograph as water temperatures approach 20 °C. Spawning, both in the
hatchery and in the field, generally occurs in a 2-month timeframe between
July 1 and September 1, although high flow water years may suppress river
temperatures and extend spawning in the natural system into September.
Conversely, during low flow years when the water warms earlier, spawning may
occur in late June.
Temperature also has an effect on egg development and hatching. In the
. laboratory, egg mortality was 100 percent in a controlled test at 13 °C. At
16 °C to 18 °C, development of the egg is slightly retarded, but hatching