Water quality of the Boulder Creek watershed, Colorado

Fact Sheet ◽  
2003 ◽  
Author(s):  
Philip L. Verplanck ◽  
Sheila F. Murphy ◽  
Larry Billingsley Barber
Keyword(s):  
Water Quality ◽  
Creek Watershed

Hydrology and Water Quality of Chapel Branch Creek Watershed with Karst Topography, SC

2011 ◽  
Author(s):  
Devendra M Amatya ◽  
Thomas M Williams ◽  
Amy E Edwards ◽  
Daniel R Hitchcock
Keyword(s):  
Water Quality ◽  
Creek Watershed

scholarly journals Water quality of the Canchim’s creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities

2002 ◽  
Vol 45 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Odo Primavesi ◽  
Alfredo Ribeiro de Freitas ◽  
Ana Cândida Primavesi ◽  
Haydée Torres de Oliveira
Keyword(s):  
Water Quality ◽  
Water Conservation ◽  
Production Systems ◽  
Stream Water ◽  
Oxygen Demand ◽  
Creek Watershed ◽  
Sampling Points ◽  
Beef Cattle Production ◽  
True Color

The Canchim’s creek watershed in São Carlos, SP, Brazil, was chosen to evaluate water quality affected by dairy and beef cattle production systems based on tropical pasture. The water samples were collected monthly, during three years, at six sampling points: spring in a tropical forest, spring in an intensive dairy production system, two dam springs, and stream water upward and at the delta. Results showed differences (P<0.01) among sampling points for the mean parameters. True color, hardness, turbidity, electric conductivity, alkalinity, pH, chemical oxygen demand and consumed oxygen explained well differences among sampling points. According to current legislation standards, water quality fitted with most of the established parameters for class 2, with exception of phosphate and iron. The high levels of total phosphorus, except in the forest spring, classified this water in an eutrophic class, even where soil and water conservation practices were considered adequate.

Model of spring runoff quantity and quality for urban watersheds

1999 ◽  
Vol 39 (12) ◽  
pp. 249-256 ◽  
Author(s):  
Alena Bartošová ◽  
Vladimir Novotny
Keyword(s):  
Water Quality ◽  
Traffic Safety ◽  
Suspended Solids ◽  
Dissolved Metals ◽  
Chemical Application ◽  
Traffic Emission ◽  
Creek Watershed ◽  
Receiving Waters ◽  
The Impact

Use of deicing chemicals to provide traffic safety during winter causes water quality problems for urban receiving waters. High chloride content from deicing salt changes partitioning between adsorbed and dissolved metals, increasing the dissolved (toxic) metal fraction in snowmelt. Abrasives generate large loads of suspended solids. A model was developed to evaluate the impact of snow removal and road deicing practices on water quality of urban receiving waters. The model was calibrated using data from the Lincoln Creek watershed (Milwaukee, Wisconsin), and verified on 30th Ave. watershed (Edmonton, Alberta). The watersheds differ in winter weather pattern as well as in winter road maintenance. Road salt is used exclusively in Milwaukee to maintain road safety while sand-salt mixture is applied in Edmonton. The quantitative part of the model is based on heat balance theory and describes the processes of snowpack formation, snow melting, infiltration, and runoff formation. The qualitative part calculates the accumulation of pollutants (atmospheric deposition, traffic emission, and deicing chemical application) in snowpack and resulting quality of snowmelt runoff. The mobility of pollutant in the snowpack is determined by partitioning to particulates and ice crystals. The results of simulation for chlorides, suspended solids, and lead are presented.

Environmental and Economic Evaluation of Cow-Calf Wintering Site Runoff Control as a Beneficial Management Practice to Improve Surface Water Quality

2007 ◽  
Vol 42 (4) ◽  
pp. 240-251
Author(s):  
James J. Wuite ◽  
David S. Chanasyk ◽  
Muhammad A. Akbar
Keyword(s):  
Water Quality ◽  
Management Practice ◽  
Surface Water Quality ◽  
Economic Cost ◽  
Creek Watershed ◽  
Runoff Control ◽  
Surrogate Measure ◽  
The Impact ◽  
Kjeldahl Nitrogen

Abstract A runoff diversion-collection system was evaluated as a beneficial management practice (BMP) for minimizing the impact of wintering site runoff on the water quality of an adjacent reach in the headwaters sub-basin of the Haynes Creek Watershed in central Alberta. Significant (α = 0.05) post-BMP mean annual load reductions of 13, 47, and 17% for dissolved, particulate, and total phosphorus, respectively, were realized. Mean annual loads of nitrate nitrogen and total Kjeldahl nitrogen were also reduced by 83 and 22%, respectively. The sum of total loads of Kjeldahl nitrogen and nitrate-plus-nitrite nitrogen, a surrogate measure of total nitrogen, also showed a reduction of 29%. However, mean annual load of total residue increased by 15%. Despite significance at the wintering site, these water quality changes were not statistically detected at the outlet of the subbasin. In spite of the measureable improvement in downstream water quality, adoption of the studied BMP represented a net economic cost to the producer under the current management conditions at the site. Furthermore, there appeared a need for concurrent implementation of BMPs in the headwaters sub-basin to be able to register any detectable changes in water quality at its outlet.

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