Water-quality and biological data for selected streams, lakes, and wells in the High Point Lake watershed, Guilford County, North Carolina, 1988-89

Abstract

AAS-atomic absorption spectrometry AE-atomic emission EOT MAT-bottom material CFSM-cubic foot per second per square mile COD-chemical oxygen demand DC-direct current DEG C-degrees Celsius DIS-dissolved FET-fixed end point titration FIB-fibers FLD-field GC/FID-gas chromatograph/flame ionization detector GC/MS-gas chromatograph/mass spectrometer HPLC-high-performance liquid chromatography 1C-ion chromatography ICP-inductively coupled plasma INST-instantaneous IT-incremental titration MAX-maximum MG/L (mg/L)-milligram per liter MG/KG (mg/kg)-milligram per kilogram MIN (min)-minimum ML (mL)-milliliter MM (mm)-millimeter MM OF HG (mm of hg)-millimeters of mercury NA-not available NBS-National Bureau of Standards NONCARB-noncarbonate NTU-nephelometric turbidity unit PCB-polychlorinated biphenyl pCi/L-picocurie per liter PCN-polychlorinated naphthalene SQ. MI.-square mile THMFP-trihalomethane formation potential TOT-total TOC-total organic carbon M-g/g-microgram per gram jig/kg-microgram per kilogram M-g/L-microgram per liter \i.m-micrometer |a.S/cm-microsiemen per centimeter USGS-U.S. Geological Survey VOC-volatile organic compound WAT-water WATSTORE-Water Data Storage and Retrieval System WH-whole WY-water year (determined by the calendar year in which the period October 1 through September 30 ends) IX Any use of trade, product/ or firm names in this report is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Hydrology and water quality of Little Cross Creek, Cumberland County, North Carolina, 1996-98

“…2), but in a highly urbanized setting. Concentrations observed at sites SI and S5 were consistent with observations from other predominantly urban sites in the North Carolina Coastal Plain (Simmons, 1993) but generally were lower than at urban sites in the Piedmont (Davenport, 1989;Simmons, 1993;Bales and others, 1999). Suspendedsediment concentrations measured at the other Little Cross Creek sites (S2, S3, S4, and S7) were similar to concentrations measured at pristine sites in the Coastal Plain (Simmons, 1993) and probably resulted from sediment trapping in upstream reservoirs.…”

“…Therefore, Concentrations of nitrite plus nitrate in the Little Cross Creek study area were somewhat higher than concentrations previously reported for unpolluted streams in the same geochemical zone (Simmons and Heath, 1982;Caldwell, 1992). However, concentrations in the Little Cross Creek area were similar to or lower than those observed in urban streams near the Research Triangle area (Garrett and others, 1994), Greensboro (Davenport. 1989).…”

“…At sit2 S4, storm-related samples contained significantly more total ammonia plus organic nitrogen than base-flow samples (base-flow median= 0.20 mg/L); however, the median concentration during storms was only 0.33 mg/L. Concentrations observed at the Little Cross Creek sites were similar to those observed in streams near High Point (Davenport, 1993), but were lower than in urban streams in Charlotte and the Research Triangle area of North Carolina (Garrett and others, 1994;others, 1996, 1998). Concentrations of total ammonia plus organic nitrogen did not appear to vary seasonally at sites in Little Cross Creek.…”

“…1989). High Point (Davenport, 1993), and Charlotte, N.C. others, 1996, 1998). Concentrations of nitrite plus nitrate did not vary in relation to streamflow at any of the study sites.…”

“…Bales and others (1999) presented instream concentrations and loads of suspended sediment, nitrogen, phosphorus, and total organic carbon at nine urban sites in Mecklenburg County. Other studies of sediment and nutrient conditions and(or) transport have been conducted for urban watersheds in Guilford County (Davenport, 1989;; Winston-Salem (Mustard and others, 1987;Driver and Tasker, 1990), and Durham (Colston, 1974).…”