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<br />14
<br />
<br />TECHNIQUES OF WATER-RESOURCES INVESTIGATIONS
<br />
<br />logically homogeneous region. A solution,
<br />made by trial and error, is possible only when
<br />the gaged basins encompass different propor-
<br />tions of area in the various elevation zones.
<br />
<br />Low-flow characteristics from base-flow
<br />
<br />measurements
<br />
<br />Discharge measurements of low flows at an
<br />ungaged stream site may be related to con-
<br />current flows at a nearby gaging station at
<br />which the low-flow frequency curve is de-
<br />fined. The low-flow characteristics at the gag-
<br />ing station then can be transferred through
<br />that relation to obtain estimates of the char-
<br />acteristics at the measurement site. The
<br />method is widely applicable. Examples are
<br />given by Riggs (1965, 1970).
<br />
<br />References
<br />
<br />Beard, L. R., 1962, Statistical methods in hydrology:
<br />U.S. Army Engineer District, Corps of Engi-
<br />neers, Sacramento, Calif.
<br />Benson, M. A., 1960, Characteristics of freqency
<br />.curves based on a theoretical 1,OOO.year record
<br />in Dalrymple. Tate, Flood-frequency analyses:
<br />U.S. Gool. Survey Water-Supply Paper 1543-A,
<br />p. 51-74.
<br />- 1962a, Evolution of methods for evaluating
<br />the occurrence of floods: U.S. Geo!. Survey i
<br />Water-Supply Paper 1580-A, 30 p.
<br />- 1962b, Factors influencing the occurrence of
<br />floods in a humid region of diverse terrain: U.S.
<br />Geol. Survey Water-Supply Paper 1580-B, 64 p.
<br />- 1964, Factors affecting the occurrence of
<br />floods in the Southwest: U.S. Geol. Survey
<br />Water-Supply Paper 1580-D, 72 p.
<br />Boner, F. C., and Omang, R. J., 1967, Magnitude and
<br />frequency of floods from drainage areas less
<br />than 100 square miles in Montana: U.S. Geol.
<br />Survey open-file rept.
<br />Borland, J. P., 1970, A proposed streamflow data
<br />program for New Mexico: U.S. Geol. Survey
<br />open.file rept., 71 p.
<br />Collings, M. R., 1971, A proposed streamflow data
<br />program for Washington State: U.S. Geol. Sur~
<br />vey open-file rept., 48 p.
<br />Cruff, R. W., and Rantz, S. E., 1965, A comparison
<br />of methods used in flood-frequency studies for
<br />coastal basins in California: U.S. Geo!. Survey
<br />Water-Supply Paper 1580-E, 56 p.
<br />Dalrymple, Tate, 1960, Flood-frequency analyses:
<br />U.S. GeoI. Survey Water. Supply Paper 1543-A,
<br />80 p.
<br />Dawdy, D. R., Lichty, R. W., and Bergmann, J. M.,
<br />1972, A rainfall-runoff simulation model for esti~
<br />
<br />mation of flood peaks for small drainage basins:
<br />U.S. Geo!. Survey Prof. Paper 506-B, p. Bl-
<br />B28.
<br />I Gann, E. E., 1968, Flood-height frequency relations
<br />. for the Plains area in Missouri: U.S. Geo!. Sur-
<br />vey Prof. Paper 600-D, p. D52-D53.
<br />Hedman, E. R., 1970, Mean annual runoff as related
<br />to channel geometry of selected streams in Cali-
<br />fornia: U.S. Geo!. Survey Water-Supply Paper
<br />1999-E, 17 p.
<br />Irza, T. J., 1966, Preliminary flood-frequency rela-
<br />tions for small streams in Kansas: U.S. Geo!.
<br />Survey open-file rept.
<br />Leopold, L. B., and Maddock, T., Jr., 1953, The hy-
<br />draulic geometry of stream channels and some
<br />physiographic implications: U.S. GeoI. Survey
<br />Prof. Paper 252, 57 p.
<br />Matalas, N. C., and Benson, M. A., 1961, Effect of
<br />interstation correlation on regression analysis:
<br />Jour. Geophys. Research, v. 66, p. 3285-3293.
<br />Matalas, N. C., and Jacobs, B., 1964, A con-elation
<br />procedure for augmenting hydrologic data: U.S.
<br />Geo!. Survey Prof. Paper 434-E, 7 p.
<br />I Moore, D.O., 1968, Estimating mean runoff in un-
<br />gaged semiarid areas: Nevada Dept. Conserv.
<br />and Nat. Resources Water Resources Bull. 36.
<br />Patterson, J. L., 1967, Storage requirements for
<br />Arkansas streams: Arkansas Geol. Comm. \Vater
<br />Resources Cir. 10.
<br />Riggs, H. C., 1965, Estimating probability distribu-
<br />tions of drought flows: Water and Sewage Works,
<br />v. 112, no. 5, May 1965, p. 153-157.
<br />- 1966, Hydrologic data for reservoir design:
<br />Internat. Assoc. Sci. Hydrology Pub. 71, v. 2,
<br />p. 540-550.
<br />- 1968a, Some statistical tools in hydrology:
<br />U .8. Geo!. Survey Techniques of Water-Re-
<br />sources Inv. book 4, chap. AI, 39 p.
<br />- 1968b, Frequency curves: U.S. Geo!. Survey
<br />Techniques of Water Resources Inv., book 4,
<br />chap. A2, 15 p.
<br />------:---- 1969, Mean streamflow from discharge meas-
<br />urements: Internat. Assoc. Sd. Hydrology Bull.,
<br />vol. XIV, no. 4, Dec. 1969.
<br />~ 1970, The transfer value of information col-
<br />lected on representative basins: Internat. Assoc.
<br />Sci. Hydrology Pub. 96, Symposium of Welling-
<br />ton, N.Z., p. 614-631.
<br />Riggs, H. C., and Moore, D.O., 1965, A method of
<br />estimating mean runoff from ungaged basins in
<br />mountainous regions: U.S. Geo!. Survey Prof.
<br />Paper 525-D, p. D199-D202.
<br />Skelton, J., 1971, Carryover storage requhements for
<br />reservoir design in Missouri: Missouri Geo!.
<br />Survey and Water Resources, Water Resources
<br />Rept. 27.
<br />Snyder, W. M., and Stall, J. B., 1966, Men, models,
<br />methods, and machines in hydrologic analysis:
<br />Am. Soc. Civil Engineers Trans., v. 131, p. 555-
<br />556.
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