Colorado Water Science Center
Publications
Response of Ned Wilson Lake watershed, Colorado, to changes in atmospheric deposition of sulfate
The Ned Wilson Lake watershed responds directly and rapidly to changes in precipitation inputs of sulfate, which has important implications for effects of acid deposition on the aquatic system. Chemistry at three precipitation collection sites and three watershed sites (a pond, a lake, and a spring) has been monitored in and near the Flattops...
Campbell, Donald H.; Turk, John T.; Spahr, Norman E. Field methods for measurement of ground water redox chemical parameters
An inexpensive, versatile, and portable system is presented, which facilitates rapid field determinations of redox potentials, pH, conductivity, ferrous and total iron, nitrite, specific conductance, dissolved oxygen, and temperature. Accuracy is facilitated by on‐site measurements of most parameters using specially constructed flow‐through cells...
Walton-Day, Katie; Macalady, Donald L.; Brooks, Myron H.; Tate, Vernon T. Adsorption of selenium by amorphous iron oxyhydroxide and manganese dioxide
This work compares and models the adsorption of selenium and other anions on a neutral to alkaline surface (amorphous iron oxyhydroxide) and an acidic surface (manganese dioxide). Selenium adsorption on these oxides is examined as a function of pH, particle concentration, oxidation state, and competing anion concentration in order to assess how...
Balistrieri, Laurie S.; Chao, T.T. Selenium adsorption by goethite
The adsorption of Se by goethite was studied as a function of time (10 min–24 h), temperature (295.5 and 303.5 K), pH (4–11), particle concentration (3–300 mg/L), total Se concentration (0.02–5 × 10−5 M), oxidation state [Se(IV) and Se(VI)], and competing anion concentration [(anion)/(Se(IV) = 0.25 to 50 000] in order to assess the influence...
Balistrieri, Laurie S.; Chao, T.T. Some effects of acid mine drainage on Clear Creek, Colorado
No abstract available.
Ficklin, W.H.; Smith, K.S.; Walton-Day, Katie
Water-quality data-collection activities in Colorado and Ohio; Phase I, Inventory and evaluation of 1984 programs and costs
Pilot projects are being conducted in Colorado and Ohio to determine the extent to which existing water quality data, collected by different groups for various purposes and using different procedures, can be aggregated for use in addressing selected water quality questions of regional and national scope. The project has been divided into three...
Hren, Janet; Chaney, Thomas H.; Norris, J. Michael; Childress, Carolyn J. Oblinger Molecular weight and size measurements of humic substances
No abstract available.
Wershaw, R. L.; Aiken, George R.
Characterization of floodflows along the Arkansas River without regulation by Pueblo Reservoir, Portland to John Martin Reservoir, Southeastern Colorado
The need for a method for estimating flow characteristics of flood hydrographs between Portland, Colo., and John Martin Reservoir has been promoted with the construction of the Pueble Reservoir. To meet this need a procedure was developed for predicting floodflow peaks, traveltimes, and volumes at any point along the Arkansas River between...
Little, John R.; Bauer, Daniel P.
Water-resources investigations of the U.S. Geological Survey in Colorado; fiscal year 1979
Water-resources investigations of the U.S. Geological Survey in Colorado consist of collecting water-resources data and conducting interpretive hydrologic investigations. The water-resources data and the results of the investigations are published or released by either the U.S. Geological Survey or by cooperating agen-cies. This report describes...
Hillier, Donald E.
Transit losses and traveltimes of reservoir releases along the Arkansas River from Pueblo Reservoir to John Martin Reservoir, southeastern Colorado
The need for accurate information regarding the transit losses and traveltimes associated with releases from Pueblo Reservoir has been stimulated by construction of the U.S. Bureau of Reclamation's Fryingpan-Arkansas Project and a proposed winter-water storage program in Pueblo Reservoir. To meet this need, the U.S. Geological Survey, in...
Livingston, Russell K.
Hydrologic effects of reducing irrigation to maintain a permanent pool in John Martin Reservoir, Arkansas River Valley, Colorado
The U.S. Geological Survey has evaluated a plan by the Colorado Division of Wildlife to maintain a permanent pool of 10,000 acre-feet (1.2x107 cubic metres) in John Martin Reservoir on the Arkansas River. The proposed pool would be maintained through the use of water formerly diverted by the Catlin Canal Company to irrigate land in the Arkansas...
Luckey, Richard R. Hydrologic Data from the Piceance Basin, Colorado
No abstract available.
Ficke, John F.; Weeks, John B.; Welder, Frank A.