PROBABILITY OF EXCEEDING CAPACITY OF FLOOD-CONTROL SYSTEM AT THE NATIONAL REACTOR TESTING STATION, IDAHO

摘要

The present flood-control system at the National Reactor Testing Station consists of earth-fill embankments which partially dam flow in the Big Lost River, near the southwest corner of the station, and which confine the flow diverted at the dam to four spreading grounds (connected in series). Water passing through the dam flows northeastwardly in the river to accumulate in four dry lakes (terminus of the river). Water diverted into the spreading grounds may spill onto unimproved private lands.nAnalyses of historical streamflow information indicate that floods in the Big Lost River would overtop the flood-control diversion dam about once every 55 years on the average;if the culverts in the dam are completely plugged, overtopping of the dam would occur about once every 16 years.