The U.S. Geological Survey, in cooperation with Colorado Springs City Engineering and Colorado Springs Utilities, designed a study to determine if sampling method and sample timing resulted in comparable samples and assessments of biological condition. To
Zuellig, Robert E. rzuellig@usgs.gov,Bruce, James F. jbruce@usgs.gov,Stogner, Robert W. rstogner@usgs.gov,et al. Comparability among four invertebrate sampling methods, Fountain Creek Basin, Colorado, 2010-2012. 2014-01-01.