Physical, chemical, biological, and toxicity data from the study of urban stormwater and ephemeral streams, Maricopa County, Arizona, water years 1992-95

Verification of roughness coefficients for selected natural and constructed stream channels in Arizona

“…Suspended-sediment concentration was 365.4 mg/L at a discharge of about 500 ft3/s on September 28, 1995, and was considered wash load. As the drainage area is mainly urbanized, this wash-load condition probably is indicative of suspended-sediment concentrations for most flows at this site (Possum and Davis, 1996). -«.…”

Statistical summary of selected physical, chemical, and toxicity characteristics and estimates of annual constituent loads in urban stormwater, Maricopa County, Arizona

“…Data presented at the end of this report were collected by the USGS from October 1995 to October 1998. Data collected prior to October 1995 were published in Lopes and others (1995) and in Fossum and Davis (1996). Data collected by the FCDMC (water years 1991-98) were used in all statistical and regression analyses and can be requested from the FCDMC.…”