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Retention Parameter Estimates for Curve Number Runoff Procedure
A technique is developed for computing estimates and associated probabilities of the retention parameter S in the Soil Conservation Service curve number runoff procedure. This technique...

Progress Report ARS/SCS Runoff Curve Number Work Group
The Soil Conservation Service (SCS) Runoff Curve Number (RCN) procedure works well as a single event model to estimate design storm runoff volumes from a small agricultural watershed....

Variations in Curve Number for a Reclaimed AML Site
Runoff and erosion from an abandoned mine land site near Sheridan, Wyoming were monitored for four years following reclamation. Small plots, which included lengths from 12 to 24 meters...

Prediction of Sedimentgraph from a Small Watershed in Poland in a Changing Environment
Estimates of sedimentgraphs and temporal distributions of sediment concentrations are essential for prediction of pollutant concentrations in streams and reservoirs. In such predictions,...

Linking GIS with Hydrologic Modeling
A GIS-based methodology for conducting rapid assessments of pesticide and nutrient transport within agricultural watersheds was recently developed. This methodology is based upon the use...

Unit Hydrograph Derivation Using Geographic Information System
Geographical information system (GIS) data management and processing functions are used to develop synthetic unit hydrographs using input data consisting of digital elevation models (DEM)...

Streamflow Forecasting Using Trainable Neural Networks
In this investigation the practicality of applying a backpropagation neural network to modeling watershed response characteristics is examined. Two separate tests were performed. One test...

A Decision Support System for Water Quality Modeling
A prototype Decision Support System (DSS) has been developed to evaluate the environmental and economic consequences of alternative farming practices. This system was developed to help...

A GIS Based Synthetic Watershed Sediment Routing Model
For most watersheds, extensive water quality data are not available. Land use, topographic, edaphic and meteorological information is generally available; but without extensive water quality...

Dry Creek Watershed Flood Control Plan: A Case Study
This paper describes the development of the Dry Creek Watershed Flood Control Plan. This study was conducted to quantify the extent of the existing and future (buildout) drainage problems...

Three Dimensional Modeling of Watershed Hydrology
A three dimensional finite element numerical model is developed for the first order watershed hydrology using 8-noded isoparametric brick elements. The 3-D subsurface flow in a hillslope...

Winter Nutrient Losses to Groundwater Associated with Various Tillage Manure Systems
Excessive nutrient leaching to groundwater in agricultural watersheds has initiated research to develop control systems. Loading of nutrients are enhanced during the non-growing season...

Usefulness of Low-Cost Watershed Monitoring: A Case Study
A one-year monitoring study was conducted for Harford County, Maryland to identify water quality problems and sources in the 98 mi² Bush River watershed....

Modeling Nutrient Loadings from Croplands in the Chesapeake Bay Watershed
The Chesapeake Bay Watershed Model, based on the U.S. EPA Hydrologic Simulation Program Fortran (HSPF) provides a framework for evaluating and quantifying nutrient loadings to the Chesapeake...

A Dual Level Methodology for Stormwater Detention Basin Design
A dual level design methodology for designing detention basins has been developed in an effort to standardize detention basin design and expedite the design/review process. The methodology...

Modeling Stormwater Basin Effects
This paper presents results of an extension to a study included earlier in these proceedings on the downstream accumulation effects of stormwater detention basins. The previously calibrated...

Norfolk Uses a GIS to Satisfy its Stormwater Management Information Needs
The key component of stormwater management is to obtain a good understanding of the data describing the system so that regulatory, maintenance, and capital decisions concerning the system...

Runoff Modeling Using the Geomorphological Instantaneous Unit Hydrograph and ARC/INFO Geographic Information System
The degree to which the spatial variability of watershed characteristics (geographical and climatological) is recognized for simulating watershed runoff depends on the hydrologic model...

A GIS Based Geomorphic Approach for the Digital Computation of Time-Area Curves
Hydrologists routinely operate simulation models to approximate the runoff process. A popular strategy is the routing of a 'time-area' histogram. In addition, state-of-the-art hydrologic...

The Chesapeake Bay Critical Area Protection Program and the Baltimore Central Light Rail Line
This paper discusses Maryland's Critical Area Law, statewide guidelines and criteria, the Baltimore Central Light Rail Line, resource conservation areas, and other aspects...

 

 

 

 

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