“…3) were first compiled from Colton and Fitch (1974) and integrated with data collected for the Front Range Infrastructure Project (Lindsey and Shary, 1997;Langer and Lindsey, 1999) to develop clast lithology maps (Lindsey, 2003). These data are available online (Lindsey, 2001). Since that compilation, new data were collected to extend coverage west of the South Platte River south to Bear Creek and to fill gaps and verify compiled data.…”