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This report documents statistical procedures for using species abundance distributions for monitoring pollution impacts in aquatic biological communities. The species abundance distributions are also appropriate for use in other areas of applied...
1982-12-01
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Cow-calf cattle operators in the Rocky Mountain West commonly graze their cattle on the range during spring, summer and fall. They hold their cattle in semi-confinement areas during the winter where they are normally fed hay. The holding area is...
1982-03-01
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This report and accompanying computer tape document the data processing support provided by this Idaho Water Resources funded project to the larger EPA funded ''Clean Lakes'' study. This project is known by the acronym GRASP, which derives from...
1982-01-01
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This report presents comparisons of different methods of estimating average annual discharge of ungaged streams. The primary purpose of the estimates being for making hydropower feasibility investigations that utilize flow duration curves. The...
1982-12-01
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A systems approach was used to determine certain biological and physical indicators which were used to characterize the benthic ecosystem in the Clearwater River below Dworshak Dam, Idaho. Using these indicators, a Hectare-Day Index was developed...
1982-12-01
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An examination of past erosion events shows that erosion and sediment yield affected by frozen soil are usually worse than that occurring on unfrozen soil. The objectives of this project were to determine if these observed differences were real or...
1982-04-01
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AQUA is a computer simulation model used for teaching fish culture concepts. In this model, the student functions as the hatchery manager and must program fish growth, monitor pond loadings, treat diseases and make various calculations concerning...
1982-07-01
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The primary purpose of this project is to develop a sediment modeling package for use with surface irrigation return flow. A primary goal is to develop operational computer tools requiring minimal data input for predicting water quality with...
1982-11-01
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This report has defined methods of extrapolating hydrologic data for use in hydropower feasibility studies. Two large drainage basins in Idaho were studied and measured flow data from various streams in those basins were used to develop parametric...
1982-06-01
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The following appendixes, Appendix A and Appendix B, are taken from a PhD dissertation titled, ''Hydrologic evaluation methods for hydropower studies'', by L.F. Heitz, dated May 1981. These appendices contain many programs for programmable...
1982-03-01
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An aquaculture system consists of a number of biotic and abiotic factors which act alone and/or interactively in defining systems behavior and impacting the allowable growth rate (AGR)of the fish. The bioenergetics approach, as presented, provides...
1982-03-01
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The purpose of the research reported was to develop and apply techniques to obtain optimal solutions for multi-objective planning of a large irrigated area. Techniques were developed to effectively inventory a large area, determine the costs and...
1982-05-01
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The environment of a weather station site is important in estimating consumptive use by irrigated crops. Consumptive use may be over-estimated when air temperature and vapor pressure data from a weather station with an arid local environment are...
1983-07-01
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This manual documents two computer programs. The first is a finite difference ground-water flow model which has been applied to several areas in southern Idaho since its conception in 1970. The second program, titled RECHARGE, calculates and sums...
1983-02-01
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Models for oxygen consumption by rainbow trout were developed and preliminarily tested under laboratory and field conditions. The major factor leading to inaccuracies in estimating population numbers was determined to be the sensitivity of...
1983-07-01
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This study was requested by the Swan Falls Interim Study Committee to use existing information, reports, and studies to examine the economic impacts of subordinating the water right at Swan Falls to upstream irrigation. Chapters I outlines the...
1983-12-01
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This reference list was prepared to assist readers in locating references pertaining to the water resources of the Snake River basin above Swan Falls. The list concentrates on literature directed primarily at surface-water and ground-water flow...
1983-03-01
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The purpose of this research was to investigate whether there is a possibility of using satellite imagery to finely calibrate large scale basin runoff models. It is anticipated that by better understanding the snowcover depletion patterns in a...
1983-12-01
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Appendix E; supplement to IWRRI document 198303; Allen, R. G.; and Brockway, C. E. (1983).
1983-08-01
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The purpose of the research reported was to develop and apply methods for predicting daily irrigation diversions. Two types of models were developed to effectively predict diversions one day in advance and were applied to two large irrigation...
1983-10-01
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Computer implementation of the mathematical models of quantitative relationships in aquaculture systems is a dynamic process which provides a conceptual framework for understanding systems behavior. These models can provide useful information on...
1983-03-01
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The catastrophic eruption of Mt. St. Helens in southwestern Washington on May 18, 1980 deposited a plume of volcanic ash from Washington to western Montana. Ash deposits in northern Idaho were significant with depths varying from 2 to 3 mm in the...
1983-10-01
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Four consumptive use methods presented by the United Nations Food and Agricultural Organization (FAO) (Doorenbos and Pruitt, 1977) and the Jensen-Haise, SCS-modified Blaney-Criddle, standard Penman and Wright modified Penman (Wright, 1982a)...
1983-08-01
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An irrigation systems analysis procedure has been developed for the purpose of critically evaluation on-farm irrigation system plans and water management practices under New Zealand conditions. The procedure incorporates agronomic information...
1983-04-01
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Thesis. A human ecological approach is utilized to develop, measure and analyze human influences on eutrophication in Idaho lakes. Eighty-five lakes were selected for study from the over 2,500 lakes in the state. The lakes were chose primarily for...
1983-11-01
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