Water-Resources Investigations Report 01-4234

Estimates of Evapotranspiration from the Ruby Lake National Wildlife Refuge Area, Ruby Valley, Northeastern Nevada, May 1999-October 2000

CONTENTS

Abstract
Introduction
Purpose and Scope
Previous Investigations
Acknowledgements
General Description and Setting
Physiography
Hydrogeology
Climate
Plant Communities
Methods of Estimating Evapotranspiration
Energy Budget and the Bowen-Ratio Method
Eddy-Correlation Method
Evapotranspiration from Habitats
Site Locations and Conditions
Results and Analysis
Annual Evapotranspiration in Ruby Lake National Wildlife Refuge
Summary
References Cited

APPENDICES
Appendix 1. Daily evapotranspiration at the open-water site
Appendix 2. Daily evapotranspiration at the bulrush-marsh site
Appendix 3. Daily evapotranspiration at the phreatophyte-1 site
Appendix 4. Daily evapotranspiration at the desert-shrub upland site
Appendix 5. Daily evapotranspiration computed using the eddy-correlation method

CONVERSION FACTORS AND VERTICAL DATUM

 Multiply By To obtain Inch-pound units to SI metric units acre 0.4047 hectare acre-foot (acre-ft) 0.001233 cubic hectometer acre-foot per year (acre-ft/yr) 0.001233 cubic hectometer per year foot (ft) 0.3048 meter foot per mile (ft/mi) 0.1894 meter per kilometer foot per year (ft/yr) 0.3048 meter per year inch (in.) 25.4 millimeter inch per day (in/d) 25.4 millimeter per day mile (mi) 1.609 kilometer square mile (mi2 ) 2.590 square kilometer SI metric units to inch-pound units watts per square meter (W/m2) 10.76 watts per square foot

Temperature: Degrees Celsius (°C) can be converted to degrees Fahrenheit (°F) by using the formula °F = [1.8(°C)] + 32. Degrees Fahrenheit can be converted to degrees Celsius by using the formula °C = 0.556(°F - 32).

Sea level: In this report, "sea level" refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929, formerly called "Sea-Level Datum of 1929"), which is derived from a general adjustment of the first-order leveling networks of the United States and Canada.

Note: English units are used throughout this report, except in instances where a measurement has no common English-unit equivalent.