Jamestown Dam

Jamestown Dam
Location: Stutsman County in North Dakota (USA) Tributaries: James River Drain: James River → Missouri River
United States
Coordinates	46 ° 55 '51 "  N , 98 ° 42' 32"  W Coordinates: 46 ° 55 '51 "  N , 98 ° 42' 32"  W.
Data on the structure
Construction time:	1952 to 1953
Height above valley floor:	26 m
Height above foundation level :	33.5 m
Building volume:	736,266 m³
Crown length:	432 m
Base width:	222 m
Data on the reservoir
Water surface	8.48 km²
Total storage space :	37 million m³

The dam Jamestown ( english Jamestown Dam ) is located in Stutsman County in the US state of North Dakota . It dams the James River to the Jamestown reservoir ( English Jamestown Reservoir ). The town of Jamestown is immediately downstream of the dam.

The dam was built by the United States Bureau of Reclamation . Construction of the dam began in April 1952; it was completed in September 1953. The dam is used for flood protection.

Barrier structure

The barrier is an earthfill dam approximately 26 m (85  ft ) above the river bed and 33.5 m (110  ft ) above the foundation floor . The length of the dam crest is 432 m (1418 ft). The maximum width of the dam is 222 m (730 ft). The volume of the dam is 736,266 m³ (963,000  cubic yards ).

Reservoir

With the normal storage target , the reservoir extends over an area of ​​around 8.48 km² (2095  acres ). At this dam target it holds 37 million m³ (30,000 acre-feet ) of water. During flooding, the reservoir can hold a maximum of 283.7 million m³ (230,000 acre-feet); its area is then around 53.62 km² (13,250 acres).

Individual evidence

1. ↑ ^{a b c} Jamestown Dam and Reservoir Unit. (PDF) United States Bureau of Reclamation , pp. 5–8 , accessed on September 4, 2018 .