Mar 29, 2010

Detection of trends in hydrological extremes for Canadian watersheds

by
Burn, Donald H., Sharif, Mohammed, Zhang, Kan
,
Hydrological Processes
  • Examines the detection of trends in extreme hydrological events, both high and low flow events, for streamflow gauging stations in Canada
  • Analyzes a total of 68 gauging stations having a nominal record length of at least 50 years for two analysis periods of 50 and 40 years
  • States that the database of Canadian rivers investigated represents a diversity of hydrological conditions encompassing different extreme flow generating processes and reflects a national scale analysis of trends
  • Finds that annual and spring maximum flows show decreasing trends in flow magnitude and decreasing trends in event timing (earlier events)
  • Finds that low flow magnitudes exhibit both decreasing and increasing trends