Roosevelt Dam

Roosevelt Dam (HMMSB)

Location: Apache Junction, AZ 85119 Maricopa County
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Country: United States of America
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N 33° 40.138', W 111° 9.827'

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Inscription

1989 - 1996

After nearly nine years of work, $430 million in construction cost, 450,000 cubic yards of concrete, and 849 miles of reinforcing steel, another vivid chapter in Arizona history has been rewritten. Modifications to Roosevelt Dam were required because it was determined that the largest probable flood that could flow into the reservoir was far greater than originally thought possible when the dam was designed and constructed in the early 1900's.

Raising the height of the dam by 77 feet has increased the storage capacity of Roosevelt Lake by 20 percent, for a total of more than 1.8 million acre-feet. An acre-foot is the amount of water it would take to cover an acre of land to a dept of one foot, about 325,851 gallons. This is roughly the amount of water used by a family of four in one year.

Inset:
Modified Dam
Type - Concrete Gravity Arch
Arch Height - 357 feet
Top Width - 21.6 feet
Maximum Base Width - 196 feet
Generating Capacity - 36 megawatts
Spillway Capacity - 150,000 cubic feet per second
Lake Capacity - 1,802,202 acre-feet
Lake Surface - 19,199 acres
Details
HM NumberHMMSB
Tags
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Placed ByTonto National Forest
Marker ConditionNo reports yet
Date Added Wednesday, September 24th, 2014 at 1:26am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)12S E 484816 N 3725464
Decimal Degrees33.66896667, -111.16378333
Degrees and Decimal MinutesN 33° 40.138', W 111° 9.827'
Degrees, Minutes and Seconds33° 40' 8.28" N, 111° 9' 49.62" W
Driving DirectionsGoogle Maps
Area Code(s)480
Closest Postal AddressAt or near 23949-24085 Apache Trail, Apache Junction AZ 85119, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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