Sediment Entrapment by Stream Channel Vegetation
Degraded headwater streams are common in the mountainous West. They have experienced a variety of stresses from public and private uses and will require specific management consideration...
Modeling Water Table Response to Climate Change in a Norther Minnesota Peatland
Projections of global warming raise questions concerning the fate of wetlands in many parts of the world. In northern Minnesota, there is concern that the nearly 3 million hectares of...
Effect of Agricultural Drainage on Water Quality in the Mid-Atlantic States
Agricultural drainage development in the form of drainage alone and controlled drainage-subirrigation (CD-SI) has created conflicts with environmental concerns. Most concerns the lack...
Effect of Agricultural Drainage on Water Quality in the Southeastern Coastal Plain
This paper is designed to consolidate selected research and results from investigations of the impacts of agricultural drainage on water quality in North Carolina, South Carolina, and...
Development of Test Procedures for Unbalanced Head Operation of Slide Gates
This paper will discuss the steps taken by the Bureau of Reclamation to develop a standardized procedure for testing unbalanced head operation of high-pressure slide gates for outlet works...
The ASCE Neutron Probe Calibration Study: Overview
A workshop was held at Logan, Utah to gather field information on neutron probe calibration and operation. Several techniques and instruments were compared. This paper serves to establish...
Water Penetration Manual for California Soils
Slow water penetration in irrigated soils is a complex problem of major importance in California's $18 billion agricultural industry. The Kearney Foundation of Soil Science chose to work...
Well Response in a Leaky Aquifer and Computational Interpretation of Pumping Tests
An analytic solution is derived describing flow in a horizontal confined leaky aquifer of infinite extent around a fully penetrating well of negligible storage capacity. The differences...
Concentration History During Pumping from a Leaky Aquifer with Stratified Initial Concentration
Analytical and numerical solutions are employed to examine the concentration history of a dissolved substance in water pumped from a leaky aquifer. Many aquifer systems are characterized...
Modeling Ground Water Mounding in a Heterogeneous Unconfined Aquifer
A numerical, potential flow solution for the flow pattern and water table elevation due to recharge in unconfined, heterogeneous aquifers has been developed using boundary, conforming...
Sedimentation and Flood Protection for the Lower Yellow River
The Lower Yellow River is known for its disastrous floods in the past. After 4 decades without major floodings, rapid economic and population growths along the River have drew concerns...
Orange County Florida Landfill Dilute Leachate Wetland Treatment and Restoration System
The Orange County Landfill began operation in 1971 as an EPA demonstration project for the purpose of defining landfill operations in high groundwater table areas. To prevent groundwater...
Environmental Control of Wetland Plant Communities
We have determined hydrologic regimes at a variety of sites while conducting studies to identify factors controlling wetland plant community composition and distribution. We have had relatively...
Removal of Tidal Fluctuations from Pumping Test Data
A simple technique for removing tidal fluctuations from drawdown data was examined. This technique relied simply upon transforming measured surface water level data to fit the pretest...
Quality Control and Quality Assurance Plan for Bridge Channel-Stability Assessments in Massachusetts
A quality control and quality assurance plan has been implemented as part of the Massachusetts bridge scour and channel-stability assessment program. This program is being conducted by...
Screening of Bridges in New Jersey for Scour
New Jersey Department of Transportation has embarked on a program to evaluate all existing bridges over waterways to assess their vulnerability to failure by scour. The Stage I (Screening...
Quality Control in Evaluating Scour at Bridges
Quality control procedures currently in use for conducting statewide bridge scour screening and evaluation studies are described. The procedures address bridge scour screening and calculation...
New Jersey Bridge Scour Evaluation Program
The New Jersey Department of Transportation has undertaken an ambitious scour evaluation program for the existing waterway bridges in the state. The methodology developed and utilized...
In-Depth Scour Evaluations for Bridges in Pennsylvania
The scour evaluations described herein have been prepared for the Pennsylvania Turnpike bridge crossing the Unami Creek, the first bridge studied in a series of nineteen major Turnpike...
Comparison of Two Methods of Screening Bridges for Scour
Scour evaluations were performed for large numbers of bridges in two separate studies in New York and New Jersey. The two studies used different screening methods for identifying high-priority...
Return to search