Measurement of Stream Reaeration Rate Coefficients Using Propane Gas
Three determinations of the reaeration rate coefficient, K2, were made on a 1185-m reach of the upper Assabet River in Westborough and Northborough,...
Dissolved Oxygen and Woody Debris: Detecting Sensitive Forest Streams
Early watershed studies showed that timber harvesting and yarding could depress dissolved oxygen in nearby streams when fresh slash entered streams and streamside shade was reduced. State...
Gas Transfer Measurements on an Ice-Covered River
Wasteload allocation for existing and proposed pulp mills in the Athabasca River Basin of northern Alberta, Canada, necessitated measurement of the atmospheric reaeration rate, K2,...
Development of an Expert System for Estimating Stream Reaeration Rates
This paper describes a data base of measured reaeration coefficients organized to assist users with estimating coefficients for rivers and streams with hydraulic characteristics similar...
Rehabilitation of Rapidly Urbanizing Streams
DuPage County, Illinois is implementing a stream maintenance program with the purpose of restoring and preserving the hydraulic efficiency of its streams and drainageways. The program...
Hydrologic Analysis Model for Screening Wetland Restoration Sites in the Rainwater Basin, Nebraska
Historically, the Rainwater Basin in south central Nebraska contained approximately 4,000 wetlands. Today, over 90 percent of those wetlands have been lost, primarily due to drainage for...
Chute Design Using Concrete Building Blocks
Chutes constructed using concrete building blocks for erosion control on ephemeral streams have performed successfully. The chutes consist of a layer of blocks placed on a geotextile over...
Yesterday's Swamp
Since the mid-80s there has been an explosion of engineering firms entering the wetlands design and restoration market. As yesterday's bogs and swamps, once drained and filled...
Tourism Versus Conservation in Fernando De Noronha Island, Brazil
Conscious of the problems created by tourism expansion and searching for a definition of the uses compatible to the restoration and the maintenance of ecological equilibrium, the previous...
Effect of Flow Conditions on Stream Reaeration Coefficients
Contrary to the findings of previous studies of channel-controlled stream reaches, it was found that, in four reaches of a small stream characterized by a series of pools and riffles,...
Instream Flows for Recreational and Aesthetic Resources
Methods for assessing impacts of instream flow changes on recreation and aesthetics are presented. Impacts to recreation can be predicted by quantifying recreational use, predicting impacts...
Building A Better Wetland
Nouri described an engineering plan designed for the National Audubon Society to restore the Ballona Wetlands of southern California, which has been severely degraded by population growth,...
Bartolo Water Pipeline Rehabilitation Study
Restoration of old, large-diameter pipelines in highly urban settings presents challenges in cost effectively preparing the structures for reliable service under modern operating conditions....
Rehabilitation of the Seekonk River Interceptor Sewer, Providence, Rhode Island
The Seekonk River Interceptor, located in Providence, Rhode Island and owned by the Narragansett Bay Commission, is a combined sewer system originally built in the late 1800s. Portions...
Instream fFlows for the Big Bend Reach of the Platte River
The Big Bend reach of the Platte River in Central Nebraska provides habitat for 230 species of migratory birds. Included are six endangered or threatened species and the world's...
Hydrologic Conditions at the Des Plaines Wetlands
An area of abandoned farmland and gravel quarries in northeastern Illinois has been converted to a test site for methods to reestablish or restore wetlands. Four stream gaging stations...
Environmental Degradation of Spawning Gravels in the Tucannon River
The important relationship between upstream soil and water conservation measures and salmonid habitat conditions in the Pacific Northwest is illustrated by way of computer simulations...
Kissimmee River: Engineering Approaches for Restoration
The Kissimmee River, located in central Florida, was channelized for flood control during the 1960s. Movements by environmental interest groups have produced strong sentiment to restore...
Restoring Chesapeake Bay Living Resources
Following nearly ten years of study and analysis of the degraded Chesapeake Bay ecosystem, a new emphasis has emerged in 1986 - linkage of water quality to living resource problems, with...
Translating Science for Coastal Decisionmaking
A uniform process of technical information assembly and application has been conducted for six major estuarine systems in Florida. Since 1976, local and regional coastal resource decisions...
Return to search