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<br />0330
<br />
<br />reach 2 were close to zero during every season,
<br />whereas median values for reach 3 indicated a daily
<br />streamflow gain of at least 2 ft3/s during all seasons.
<br />In reaches 2 and 3, streamflow gains and losses
<br />were computed for selected streamflow-event periods
<br />from 1984 through 1992. Time periods were selected
<br />for streamflow-event analysis of streamflow gains and
<br />losses by visually matching inflow and outflow
<br />hydrograph periods for distinctive streamflow events.
<br />In reach 2, more than 100 streamflow-event calcula-
<br />tions were made, and daily median values were
<br />close to zero during every season. In reach 3,
<br />88 streamflow-event calculations were made and
<br />daill, median values indicated a daily gain of at least
<br />2 ft Is in streamflow during all four seasons.
<br />
<br />REFERENCES CITED
<br />
<br />Abbott, P.O., 1985, Description of water-systems
<br />operations in the Arkansas River Basin, Colorado:
<br />U.S. Geological Survey Water-Resources Investiga-
<br />tions Report 85-4092, 67 p.
<br />Bureau of Reclamation, 1964a, Irrigation report on the
<br />Trinidad Project, Colorado-v. 1, Irrigation report:
<br />U.S. Department of the Interior, Report 61, 76 p.
<br />(Revised September 1964.)
<br />-1964b, Irrigation report on the Trinidad Project,
<br />Colorado-v. 2, Appendix A, supplement-water
<br />supply and utilization: U.S. Department of the
<br />Interior, Report 61,95 p. (Revised April 1964.)
<br />-1988, Trinidad Project, Colorado, Review of
<br />operating principles, final report: Loveland, Colo.,
<br />U.S. Department of the Interior, 59 p.
<br />Colorado Cooperative Crop and Livestock Reporting
<br />Service, comp., 1995, Colorado agricultural statistics,
<br />1995: Denver, Colorado Department of Agriculture,
<br />222p.
<br />
<br />Colorado Department of Natural Resources, 1975,
<br />Purgatoire River traveltime and transit losses study:
<br />Denver, Office of the State Engineer, Division of Water
<br />Resources, v. 1, paging unknown.
<br />Frelsel, D.R, and Hirsch, RM., 1992, Statistical methods
<br />in water resources: New York, Elsevier, Studies in
<br />Environmental Science 49, 522 p.
<br />'Iman, RL., and Conover, W.J., 1983, A modem approach to
<br />statistics: New York, Wiley, 497 p.
<br />Lindauer, I.E., and Ward, R.T., 1968, A survey ofthe woody
<br />phreatophytes in the lower Arkansas River Valley of
<br />Colorado: Fort Collins, Colorado State University,
<br />47 p.
<br />!Qazi, A.R, and Krason, Jan, 1976, A study of the transit
<br />losses in the Purgatoire River, southeastern Colorado:
<br />Denver, Office of the State Engineer, Division of Water
<br />Resources, 30 p.
<br />Rantz, S.E., and others, 1982, Measurement and computa-
<br />tion of streamflow-v. I, Measurement of stage and
<br />discharge, v. 2, Computation of discharge:
<br />U.S. Geological Survey Water-Supply Paper 2175,
<br />v. 1, p. 1-284; v. 2, p. 285-631.
<br />'U.S. Department of Agriculture, 1988, Colorado irtigation
<br />guide: Denver, Soil Conservation Service [known
<br />since 1995 as the Natural Resource Conservation
<br />Service], [variously paged]. (Revised.)
<br />von Guerard, Paul, Abbott, P.O., and Nickless, R.C., 1987,
<br />Hydrology of the U.S. Army Pinon Canyon
<br />Maneuver Site, Las Animas County, Colorado:
<br />U.S. Geological Survey Water-Resources Investiga-
<br />, tions Report 87-4227, 117 p.
<br />,
<br />:von Guerard, Paul, Parker, RS., and Dash, RG., 1993,
<br />, Assessment of effects of military maneuvers on the
<br />streamflow, water quality, and sediment yields at the
<br />U.S. Army Pinon Canyon Maneuver Site, Las Animas
<br />County, Colorado: U.S. Geological Survey Water-
<br />Resources Investigations Report 91-4095,84 p.
<br />
<br />24 Evaluation of Streamflow Traveltime and Streamflow Gains anc;l Losses along the Lower Purgatoire River,
<br />Southeaatarn Colorado, 1984-92
<br />
<br />""u.s. GOVERNMENT PRINTING OFFIC,E 1997-0-1173-422/49001
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