Cross Section 90's—A Profile of User Fee Funded Stormwater Utility Practices in the U.S.
The task of securing adequate tax funding to support a stormwater drainage system regarding operating and capital needs is discussed. An innovative and practical solution was arrived at;...

RCHARC: A New Method for Physical Habitat Analysis
The Riverine Community Habitat Assessment and Restoration Concept (RCHARC) is applied to the Gavin's Point tailwater of the mainstem Missouri River as part of studies by the U.S. Army...

Runoff Prediction by Recession Curves
Based on the characteristics of the discharge hydrograph such as the rising limb and the recession curve, a simple water tank model is constructed. This water tank has cross-sectional...

Stable Slopes of Alluvial Channels
An alluvial channel responds to the variation in the incoming sediment by changing its cross-section and especially the slope. Regime relations formulated by Lacey (1930) and many subsequent...

Scour Analysis for Bridges over Missouri and Mississippi Rivers
Engineering services are being provided for three bridge crossings, two over the Missouri River and the other over the Mississippi River. Scour consideration for the bridged waterways...

Bridge Abutment Scour in Compound Channels
Experiments are reported which quantify the effect of channel geometry on local scour at abutments for bridges crossing compound river channels. The channel geometry effects are represented...

Emergency Protection, San Luis Rey River Aqueducts
A calibrated hydraulic computer model (FLUVIAL-12) was used to predict flood damage potential at the two San Diego Aqueduct river crossings in northern San Diego County. Model results...

Numerical Modeling of Unsteady Compound Channel Flow
The unsteady open channel flow equations describing conservation of mass and momentum (St. Venant equations) are integrated numerically to determine the depth of flow and the rate of discharge...

Variation of Froude Number with Discharge for Large-Gradient Streams
Under chemical-control conditions, the Froude number (f) for a cross-section can be approximated as a function of the ratio R2/ 3/d...

Advanced HEC-2 Modeling on Forester Creek
The goal of this paper is to share information regarding advanced modelling techniques used to solve complex hydraulic flow issues using the HEC-2 Computer Model (1990). There are several...

Bridge-Scour Analysis Using the Water-Surface Profile (WSPRO) Model
A program was developed to extract hydraulic information required for bridge-scour computations, from the Water-Surface Profile computation model (WSPRO). The program is written in compiled...

Measurement of Bridge Scour at the SR-32 Crossing of the Sacramento River at Hamilton City, California, 1987-92
A study of the State Route 32 crossing of the Sacramento River near Hamilton City, California, is being made to determine those channel and bridge factors that contribute to scour at the...

A Simple Finnish Method for the Structural Fire Design of Composite Structures
The structural fire design of composite structures in Finland has previously been based on furnace tests, which are expensive and take too much time to arrange. With the increasing prominence...

Pipelines Crossing Highways and Railroads by Tunneling
When new pipeline construction requires the crossing of highways and railroads, a pipeline is generally installed in pipe or tunnel linear plate encasement which has been installed by...

Estimates of Permeability of Porous Materials Using Image Analysis of Cross Sections
We have developed an image processing method for characterizing the pore structure of porous materials such as rock and concrete, to provide a means for understanding the dependence of...

Drilling with Direction
Norfolk, Va.'s 48 in. diameter raw water main crosses three rivers in its 52,000 ft route. At the Elizabeth River, an aerial or subaqueous crossing was not feasible, so a...

Condition Monitoring of Structures Using Transient Response
Condition monitoring of structures by measuring transient response and tracking the derived modal parameters has been applied with success in three laboratory studies. Where modal parameters...

Inflatable Structures of Non-Circular Cross Section
This paper discusses six approaches to achieve an inflatable structure of non-circular cross section for use in lunar base development. Other papers have examined potential multiple uses...

Computer Simulation of River Channel Changes at a Bridge Crossing on a Point Bar

Evaluation of Erosion Potential at Pipeline Crossings

 

 

 

 

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