PRECIPITATION AND WATER-YIELD RELATIONSHIPS ON THE LAKE GLENDALE WATERSHED

HYDROLOGIC FACTORS ON THE LAKE GLENDALE WATERSHED WERE MEASURED FOR EIGHT WATER YEARS. THIS 1,350-ACRE WATERSHED WAS WELL COVERED BY VEGETATION, WITH FOREST MAKING UP ABOUT TWO-THIRDS OF THE TOTAL AREA AT THE BEGINNING OF THE STUDY. THE HYDROLOGIC DATA WERE ANALYZED TO DETERMINE ANNUAL, MONTHLY, AND INDIVIDUAL STORM YIELDS AS RELATED TO STORM CHARACTERISTICS AND SOIL MOISTURE CONDITIONS. EACH STORM WASH ANALYZED SEPARATELY TO DETERMINE INDIVIDUAL STORM YIELD. WATER YIELD TO THE LAKE WAS MADE UP OF THREE COMPONENT FLOWS: (1) OVERLAND FLOW, WHEN INFILTRATION CAPACITY WAS EXCEEDED BY THE INTENSITY OF PRECIPITATION AND SURFACE FLOW OCCURS, (2) PERCHED FLOW, WHEN THE PERCOLATING WATER REACHED THE FRAGIPAN, MUCH OF IT FLOWING ALONG THE PAN TO BE CONTRIBUTED TO THE LAKE, AND (3) BASE FLOW WHEN THE PAN WAS WETTED, DOWNWARD PERCOLATION OCCURRED BELOW THE FRAGIPAN AND THE SOURCE OF BASE FLOW FROM GROUND WATER WAS RECHARGED. GROUNDWATER LEVELS WERE FOUND TO BE AN INDEX OF SOIL MOISTURE OR STORAGE CAPACITY. STORMS FOR WATER-YIELD PREDICTION WERE SEPARATED INTO THREE PRECIPITATION-WATER YIELD RELATIONSHIPS AND A WATER-YEAR PRECIPITATION-WATER YIELD RELATIONSHIP WAS DEVELOPED. CHANGES IN THE PRECIPITATION-WATER YIELD RELATIONSHIPS FOR THE PERIOD OF STUDY WERE RELATED TO CHANGES IN AMOUNT AND DISTRIBUTION OF PRECIPITATION DURING EACH YEAR.

  • Supplemental Notes:
    • Bulletin 713, 35 PP, 17 FIG, 3 TAB, 18 REF,
  • Corporate Authors:

    University of Illinois, Urbana-Champaign

    Agricultural Experiment Station
    Urbana, IL  United States  61801
  • Authors:
    • Boggess, W R
    • Russell, R L
    • Gilmore, A R
  • Publication Date: 1965-8

Subject/Index Terms

Filing Info

  • Accession Number: 00204310
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 9 1970 12:00AM