|
<br />boating. and camping. During construction some embankment material
<br />was obtained from a 75-acre tract of land immediately downstream of
<br />the dam. This excavated area. averaging 12 feet deep, filled with
<br />water and formed Lake Hasty. now used for year-round recreation.
<br />North of the reservoir, a half-mile segment of the historic Santa Fe Trail
<br />has been enclosed by a fence and marked with an appropriate sign.
<br />
<br />John Martin Dam consists of a concrete gravity structure 1.644 feet
<br />long and 120 feet high, and an earthfill structure 2.600 feet long. The
<br />concrete gravity structure contains a spillway controlled by sixteen 30
<br />foot by 64 foot tainter gates and their operating machinerv. There are
<br />earthen wing dams on either side of the main dam. The north wing
<br />dam is 3,880 faet long. connecting to the earthfill structure of the main
<br />dam at the north abutment. The south wing dam is 5,807 feet long and
<br />connects to the south end of the concrete structure of the main dam.
<br />A bituminous-surfaced roadwav. 21 feet wide, extends along the crest
<br />of the north wing dam, main dam, and south wing dam. The overall
<br />length of the structure is 2.6 miles. Detailed project data. based on the
<br />1986 resurvey. is shown below,
<br />
<br />DAM
<br />Total length, feet ........................................................13,945
<br />Maximum hei9ht above streambed. leel..............................118
<br />Width of roadway on dam, feet ...........................................21
<br />
<br />SPILLWAY
<br />Total length, including piers, feet ....................................1,174
<br />Crest gates, 30' x 64', each ..........................,..............,.....16
<br />Discharge capacity, cfs ......,........,'......... ....."......,......639,200
<br />
<br />OUTLET WORKS
<br />Sluicing conduits. 6' x 7.5', each ...........,........................,.....4
<br />Regulatin9 conduits, 4' x 4', each ................,........................2
<br />Total outlet capacity at elevation 3,851, cfs ...................14, 700
<br />
<br />RESERVOIR
<br />Capacity at elevation 3,870, acre-feet ....................,....608,245
<br />Flood control storage, acre-feet...................................259.562
<br />Conservation and recreation storage, acre-feet ,.............348,683
<br />Water surface at spillway crest, acres..............................8,975
<br />Water surface at top of conservation pool, acres............. 11 ,645
<br />Water surface at top of flood control pool, acres ...........17, 151
<br />Drainage areas, square miles ......................,.......,.........18,915
<br />
<br />9
<br />
<br />...~c.. ",J
<br />
<br />I ---- ----- ----
<br />
|