Water-supply Paper, Bände 613-615U.S. Government Printing Office, 1929 |
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1925 Date Gage acre-feet Maximum Minimum affected by ice applying to rating April ascertained by applying August Big Lost River Big Wood River Boise River CHANNEL AND CONTROL.-Bed charge Date Gage charge Feet Sec.-ft CONTROL.-Bed composed Creek curve well defined Daily discharge ascertained daily gage height Date Gage Dis Day Oct December Deschutes River Discharge in second-feet Discharge measurements DISCHARGE MEASUREMENTS.-Made DISCHARGE.-Maximum stage recorded diversions ending September 30 EXTREMES OF DISCHARGE.-Maximum February gallons a day height charge Date height charge Feet height to rating Henrys Fork Idaho June 30 June July Aug Kauai Little Wood Rivers Maximum Minimum Mean Maximum stage recorded mean daily gage million gallons minimum discharge minimum stage Molokai Monthly discharge October Operation of water-stage Oreg Payette River rating table mean recorder graph Reservoir Run-off in acre-feet second-feet Run-off Sept Snake River square miles table mean daily Wailua River water-stage recorder satisfactory
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Seite 2 - Second-feet per square mile" is the average number of cubic feet of water flowing per second from each square mile of area drained, on the assumption that the run-off is distributed uniformly both as regards time and area. "Run-off in inches...
Seite 1 - For gaging the streams and determining the water supply of the United States, and for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources.
Seite 269 - That this officer shall have the direction of the Geological Survey, and the classification of the public lands and examination of the Geological Structure, mineral resources and products of the national domain...
Seite 5 - well defined" indicates, in general, that the rating is probably accurate within 5 per cent; "fairly well defined," within 10 per cent; "poorly defined," within 15 to 25 per cent. These notes are very general and are based on the plotting of the individual measurements with reference to the mean rating curve. The...
Seite 270 - DEFINITION OF TERMS. The volume of water flowing in a stream— the "run-off" or " discharge " — is expressed in various terms, each of which has become associated with a certain class of work. These terms may be divided into two groups — (1) those which represent a rate of flow, as secondfeet, gallons per minute, miner's...
Seite 3 - ... or in ponds, lakes, and swamps, and this stored water passes off in the streams during the spring break-up. At the end of September, on the other hand, the only stored water available for run-off is possibly a small quantity in the ground; therefore the runoff for the year beginning October 1 is practically all derived from precipitation within that year.
Seite 4 - In the table of monthly discharge the column headed "Maximum" gives the mean flow for the day when the mean gage height was highest. As the gage height is the mean for the day it does not indicate correctly the stage when the water surface was at crest height and the corresponding discharge was consequently larger than given in the maximum column. Likewise, in the column headed "Minimum" the quantity given is the mean flow for the day when the mean gage height was lowest. The column headed "Mean"...
Seite 271 - The base data collected at gaging stations consist of records of stage, measurements of discharge, and general information used to supplement the gage heights and discharge measurements in determining the daily flow. The records of stage are obtained either from direct readings on a staff gage or from a water-stage recorder that gives a continuous record of the fluctuations.
Seite 272 - Maximum" gives the mean flow, as determined from the rating table, for the day when the mean gage height was highest. As the gage height is the mean for the day, it does not indicate correctly the stage when the water surface was at crest height and the corresponding discharge was consequently larger than given in the maximum column. Likewise in the column headed "Minimum" the quantity given is the mean flow for the day when the mean gage height was lowest.
Seite 197 - The following terms not in common use are here defined : "Stage-discharge relation," an abbreviation for the term "relation of gage height to discharge.