Spring and springbrook fauna of the Piceance Basin, Colorado

The aquatic macroinvertebrates of Willow Creek, Piceance Creek, Stewart Gulch, and spring sources surrounding Tract C-b in the Piceance Basin were sampled from July 1978 through August 1980 as part of a baseline monitoring program prior to oil-shale development. Macroinvertebrate species lists are included in this report. The spring sources exhibited a somewhat different and more constant physical and chemical environment compared to the streams.