A Water Pricing Model for Lake Texana
Faced with water sales and recreation revenues insufficient to service the project debt, the Lavaca-Navidad River Authority (L-NRA), operators of Lake Texana, decided upon a novel approach...
Nonpoint Source Runoff and Urban Water Management
Urban nonpoint source pollution can be viewed from physiochemical, source, and impact perspectives. These and its dependence upon runoff pose important problems for pollution control management,...
Nonpoint Source Pollution Control & Land Use
Nonpoint source pollution control requires dealing with city, suburban and rural activities, and controlling pollution either at source, by detention basin quality control or by treatment...
Site Specific Hydrological Model for Permaculture Application
This paper presents results of a study conducted on a small pond and watershed in Waterbury, Connecticut. The Soil Conservation Service method presented in Technical Release #55 (TR 55),...
The Dallas Floodway?Past and Present Successes in Flood Protection Benefits
This paper explores the history of the Dallas Floodway, past performance of the project under various flood conditions and, most recently, the present successes in flood protection provided...
Evaluation of Global Warming Impact on Soil Moisture and Water Runoff in Texas
In this paper a numerical evaluation of the variability of soil moisture and surface runoff due to global warming is carried out. An analytical model of the soil moisture balance based...
A Two-Dimensional Model for Estimating Leachate Flow in Landfills
A numerical model has been developed to compute the leachate flow from solid waste landfills in an unsteady state condition. The two-dimensional moisture flow equation along with the boundary...
Characteristics of Flood-Producing Rainstorms in the Midwest
At the Midwestern Climate Center, a comprehensive re-evaluation and updating of heavy rainstorm frequency relations for 9 Midwestern states is in progress. A special effort is being made...
A Method for Estimating Peak Flows from Small Agricultural Watersheds
An attempt was made to develop a method for estimating peak runoff from agricultural watersheds by analyzing precipitation and runoff data, and incorporating the results into a procedure...
Raingage Network Resolution With Spatial Statistics
Spatial and temporal resolution of rainfall are studied using cross-correlation techniques. The cross-correlation coefficient is used in a semi-variogram type analysis to determine the...
Finite Element Analysis of Hillslope Variations in Surface Runoff
Watershed management decisions are aided through an accurate understanding of hydrologic processes. The finite element method applied to surface runoff with spatially variable hydraulic...
Asymptotic Determination of Curve Numbers from Rainfall?Runoff Data
Background, general instructions, and examples are given for determining Runoff Curve Numbers (CN) from small watershed event rainfall and direct runoff data sets. In order to preserve...
Rangeland Evaluation of WEPP Hydrology
The hydrology component of the Water Erosion Prediction Project (WEPP) utilizes the W.H. Green and G.A. Ampt infiltration equation to simulate the rate and volume of excess rainfall. Excess...
Chaotic Characteristics of Snowmelt Runoff: A Preliminary Study
Chaos, the study of nonlinear dynamic systems, offers a way of observing order in systems previously thought to be random. In this study, we analyze snowmelt runoff from a small watershed...
Possible Climate Change and Its Impact on Snowmelt and Water Supply in California
Global climate modelers are forecasting relatively large future climate change, with warming of 2 to 5?C. These changes, if they do occur, would have major impacts on California's...
Snow Fencing to Increase Streamflow on Rangelands
Snow deposition and water yield were increased 55% and 127% respectively, and duration of surface runoff was lengthened 17 days in response to snow fencing a sagebrush-covered watershed...
Simulating Runoff and Sediment Yield on Semiarid Watersheds
This paper describes a computer program called WESP (Watershed Erosion Simulation Program), a physically-based, distributed parameter, event-oriented, one-dimensional numerical model for...
A Comparison of Runoff and Sediment Yields from Bare and Vegetated Plots Using Rainfall Simulation
Data from 108 small plot rainfall simulator experiments on pinyon-juniper woodlands in Arizona and New Mexico were analyzed to determine quantifiable effects of cover on hydrologic and...
Sediment Production from Forest Roads with Wheel Ruts
Artificial rainfall was applied to two sets of paired plots 30.5 m long by 1.52 m wide, each set on a different soil type. One plot in each set contained a wheel rut while the other did...
Hydrologic Effects of Brush to Grass Conversion
A physically based rainfall-runoff model is used to detect hydrologic response to artifically induced vegetation changes on a semiarid watershed. Model parameters are optimized using a...
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