Pollution in runoff from nonpoint sources /

Estimation of total nitrogen and total phosphorus in streams of the middle Columbia River Basin (Oregon, Washington, and Idaho) using SPARROW models, with emphasis on the Yakima River Basin, Washington /
by: Johnson, Henry M., et al.
Published: (2013)

The dilution/flushing technique in lake restoration /
by: Welch, E. B. (Eugene B.)
Published: (1981)

Nutrients in ground water and surface water of the United States : an analysis of data through 1992.
Published: (1995)

Nitrogen and phosphorus concentrations and fluxes of streams in the Mississippi Embayment Study Unit, 1996-98 /
by: Coupe, Richard H. (Richard Henry), 1954-
Published: (2002)

Phosphorus and nitrogen concentrations and loads at Illinois River south of Siloam Springs, Arkansas, 1997-1999 /
by: Green, W. Reed
Published: (2001)

Nutrient trends and drivers in the Chesapeake Bay Watershed /
by: Hyer, Kenneth E. (Kenneth Edward)
Published: (2021)

Estimation of anthropogenic nitrogen and phosphorus inputs to the land surface of the conterminous United States--1992,1997, and 2002 /
by: Sprague, Lori A., et al.
Published: (2013)

Estimation of total nitrogen and phosphorus in New England streams using spatially referenced regression models /
Published: (2004)

Sources, fate, and transport of nitrogen and phosphorus in the Chesapeake Bay Watershed-an empirical model /
by: Ator, Scott W.
Published: (2011)

Optimal operation of large agricultural watersheds with water quality constraints /
by: Williams, Jimmy Ray
Published: (1978)

Percentile distributions of median nitrite plus nitrate as nitrogen, total nitrogen, and total phosphorus concentrations in Oklahoma streams, 1973-2001 /
by: Haggard, Brian E. (Brian Edward)
Published: (2003)

Phosphorus and nitrogen concentrations and loads at Illinois River south of Siloam Springs, Arkansas, 1997-1999 /
by: Green, W. Reed
Published: (2001)

Benthic nutrient cycling in the Pamlico River /
Published: (1984)

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory : evaluation of alkaline persulfate digestion as an alternative to Kjeldahl digestion for determination of total and dissolved nitrogen and phosphorus in water /
by: Patton, Charles J.
Published: (2003)

Nutrients in ground water and surface water of the United States--an analysis of data through 1992 /
by: Mueller, David K.
Published: (1995)

Combined phosphorus in the surface waters of Departure Bay, B.C. / by K.H. Austin.
by: Austin, K. H.
Published: (1959)

Estimation of nonpoint source loadings of phosphorus for lakes in the Puget Sound region, Washington /
by: Gilliom, Robert J.
Published: (1983)

Phosphorus pollution control : policies and strategies /
by: Drizo, Aleksandra, 1964-
Published: (2020)

Houghton Lake annual nitrogen and phosphorus budgets /
Published: (1973)

Concentrations and loads of nitrogen and phosphorus in the Yazoo River, northwestern Mississippi, 1996-97 /
by: Coupe, Richard H. (Richard Henry), 1954-
Published: (1998)

Assessing total nitrogen in surface-water samples : precision and bias of analytical and computational methods /
by: Rus, David L.
Published: (2012)

Trends in nutrient concentration and load for streams in the Mississippi River Basin, 1974-94.
by: Lurry, Dee L.
Published: (1997)

New York State phosphorus reduction strategy for Lake Erie and Lake Ontario /
Published: (1985)

Trends in nutrient concentration and load for streams in the Mississippi River Basin, 1974-94 /
by: Lurry, Dee L., et al.
Published: (1997)

Trends in nitrogen and phosphorus concentrations in southern New England streams, 1974-92.
by: Zimmerman, Marc James, 1947-
Published: (1997)

Water balance and quantification of total phosphorus and total nitrogen loads entering and leaving the Lago de Cidra, central Puerto Rico /
by: Ramos-Ginés, Orlando
Published: (1997)

Nitrate removal from water at the water-mud interface in wetlands /
Published: (1976)

Role of nitrogen, phosphorous and iron in occurrence of algal blooms at Abiquiu and Cochiti reservoirs /
by: Johnson, Gordon V.
Published: (1985)

Terrestrial contribution of N to stream water in managed and undisturbed forested watersheds.
by: Gosz, James R.
Published: (1976)

Nitrogen sources and cycling in natural waters /
by: Brezonik, Patrick L.
Published: (1973)

Occurrence of phosphorus, nitrate, and suspended solids in streams of the Cheney Reservoir Watershed, south-central Kansas, 1997-2000 /
by: Milligan, Chad R.
Published: (2001)

Septic tank wastewater disposal systems as phosphorus sources for surface waters /
by: Jones, Rebecca A.
Published: (1977)

Ground water and soil nitrate one year after cultivation in Hailstone Basin near Rapelje, Montana /
by: Custer, Stephan G.
Published: (1971)

Water balance and quantification of total phosphorus and total nitrogen loads entering and leaving the Lago de Cidra, central Puerto Rico /
by: Ramos-Ginés, Orlando
Published: (1997)

Sources and concentrations of phosphorus in the Cheney Reservoir Watershed, south-central Kansas /
by: Pope, Larry M.
Published: (2002)

Bioavailability of phosphorous in suspended solids from the nearshore zone of Lake Erie /
by: Mayer, T.
Published: (1987)