00350nam a2200097   450000100070000000500170000700800360002410000740006024500770013426400410021101266920260807101705.0260101s1990    pe      000 0 eng  d1 acomps. Jerry E. Carr ; Edith B. Chase ; Richard Paulson ; David Moody10aNational Water Summary 1987 : hydrologic events and water supply and use 1aDenverbU.S. Geological Surveyc1990