Effective Coordination With Fish and Wildlife Agencies
Recently the Federal Energy Regulatory Commission (FERC) expanded the role communications play in dealing with Fish and Wildlife Agencies. In March of 1985 the FERC publication #FERC-0100...

TPMs and Their Use: A Case Study
Transit performance measures (TPMs) are useful in identifying transit system deficiencies, which will provide management with opportunities for system modification and improvement. They...

Automated Data Monitoring for Disaster Prevention
A system is now available from International Hydrological Services for use on micro-computers that will provide real-time environmental monitoring, analysis, forecasting and control. This...

Water Quality Impacts From a Flood Control Reservoir
Both qualitative and quantitative approaches were used to evaluate the impact of a flood control reservoir located on the Des Moines River in central Iowa on seven water quality parameters:...

Meander Pattern Modification at Lansing, Iowa (Problem Statement)

The Experience of the St. Paul District Corps of Engineers, with State Coordination of Dredging Activities
The St. Paul District annually dredges about 1 million cubic yards of predominately clean sandy river sediments. Most of this volume comes from our maintenance of 284 miles of the 9-foot...

Intake-Shoaling and Pump-Vibration Problems
Iowa Generation's Council Bluffs Unit 3 circulating water-intake structure has experienced two major problems: (1) formation of sand bars in front of the trash racks during...

Current Hydraulics Research at the Iowa Institute of Hydraulic Research
The Iowa Institute of Hydraulic Research is engaged in fundamental and applied research on a broad range of fluid mechanics and hydraulics problems. The history and organization of the...

Sediment Transport in Pool 19, Mississippi River

Agricultural Drainage Well Impacts in Iowa

Stress-Deformation Properties of Loess and Loess-Derived Alluvium in Western Iowa

Des Moines Skywalk System
A method is proposed for estimating pedestrian traffic on a proposed skywalk system in Des Moines, Iowa. Factors that influence usage are identified. Two mathematical models are presented...

Tapered Inlet Design Using Specific Energy Curves
Design charts to simplify the hydraulic design of tapered inlet culverts for both rectangular and circular sections are presented. The use of these design charts greatly reduces the opportunity...

Iowa's Mandatory Continuing Education Law
Since July 12, 1977 Iowa has had a law requiring continuing education as a condition of license renewal for professional engineers and land surveyors. The requirements and the results...

In Situ Stress Determination by Iowa Stepped Blade
Lateral soil pressure is a vital element in soil mechanics theory and practice, but is very sensitive to disturbance and, therefore, difficult to measure. A step-tapered blade was developed...

River Quality Model for Urban Stormwater Impacts
A simplified continuous receiving water quality model has been developed as a planning guide to permit preliminary screening of areawide wastewater management strategies. The model simulates...

Modeling Stormwater Storage/Treatment Transients: Applications
The transient response of stormwater storage/treatment systems to variable forcing functions of flow and concentration is determined for completely mixed systems of constant and variable...

Pesticide Transport and Bioconcentration Model
A pesticide transport and bioconcentration model has been developed and applied to Coralville Reservoir, Iowa, for the insecticide dieldrin. Two spatial configurations, a two compartment...

Nonpoint Pollution Control; Fact or Fantasy?

What's Wrong with U.S. Transportation Infrastructure—
Federal spending for public works is being cut back. State, county and city administrations will have to bear a larger share of the load. In the case of railroads, in some areas, track...

 

 

 

 

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