Rebuilding an Illusion
A dam that controls the level of Fall Lake, a major entry to the Boundary Waters Canoe Area Wilderness of northern Minnesota had to be rebuilt, but federal agents barred constructors from...

Soft Bottom Low Flow Channel—A New Approach
In 1987, the City of Boulder, Colorado requested assistance from the Urban Drainage and Flood Control District (District) to repair a problem of cattails growing in the low flow portion...

Urban Soft Bottom Low Flow Channel—A New Approach
In 1987, the City of Boulder, Colorado requested assistance from the Urban Drainage and Flood Control District (District) to repair an all too familiar problem of cattails growing in the...

Flow Transitions Around a Single Large Bed Element
A qualitative description of the characteristics of supercritical-to-subcritical flow transitions due to the presence of a single large bed element (LBE) in a laboratory flume is presented....

Sediment and Aquatic Habitat Associations in River Systems
This paper results from the Task Committee's effort to summarize knowledge linking sediment transport and aquatic ecology. This paper presents one element of this work: the...

Our Municipal Water System Has Power
Hydroelectric potential exists in the Boulder, Colorado municipal water system. Excess pressure is developed in the water system because the water originates in the Rocky Mountains, west...

Hoover Dam Earthquakes Reconsidered
In 1936 and 1937 as the water rose behind Hoover Dam, earthquakes were felt in the Boulder City area and as far away as Las Vegas. Interest in induced seismicity was renewed in 1967 with...

Sedimentation in the All-American Canal
During the planning for the All-American Canal, by the U. S. Bureau of Reclamation as part of the Boulder Canyon Project, works were designed at the head of the canal to remove between...

An Overview of Hoover Dam Tunnel Spillway Damage
The Hoover Dam tunnel spillways have provided the Bureau of Reclamation hydraulic laboratories with new and continued opportunities for applied research. During the peak years of the Boulder...

Bureau of Reclamation Hydraulic Laboratory
The Bureau of Reclamation used hydraulic models for the first time in 1930 in the laboratory of the Colorado Agriculture Experimental Station in Fort Collins, Colorado. In 1946 the Reclamation...

Reservoir Systems Operations
The National Workshop on Reservoir Systems Operations, which convened August 13-17, 1979, at the University of Colorado in Boulder, was jointly sponsored by the American Society of Civil...

Gravel Mining and Land Development Can Go Hand in Hand
A gravel mine located adjacent to a natural area of delicate ecology, near Boulder, Colorado, has led to new approaches in mining and land reclamation. A method of progressive reclamation...

Flow Resistance in Cobble and Boulder Riverbeds
Field and experimental evidence are presented to demonstrate the importance of the inflow of sand and gravel size sediments on resistance to flow in channels whose beds are primarily cobbles,...

Economic Analysis of Structural Flood Proofing
An economic analysis of flood proofing was applied to a case study of residences and commercial establishments in the Boulder Creek flood plain of Boulder, Colo. Two alternate plans (one...

Rock Engineering for Foundations & Slopes
Proceedings of a specialty conference on Rock Engineering for Foundations and Slopes, held in University of Colorado, Boulder, Colorado, August 15-18, 1976. Sponsored by the Geotechnical...

Boulder Creek — An Environmental Status Report
Although a traditional channelization project was authorized for Boulder Creek in 1950, the study was later inactivated due to lack of local support. Recent flooding on Boulder Creek has...

Colorado River-Flow Management
A method of computing transient flow changes in a flowing stream is described. The results of more than five years of experience in the use of this method for estimating flows at the gaging...

Natural Roughness Effects in Rigid Open Channels
The studies conducted to investigate the effects of large natural roughness in open channel flow are reported. There was an attempt to create conditions of boulder streams by fixing natural...

Research Conference on Shear Strength of Cohesive Soils
Proceedings of the Research Conference on Shear Strength of Cohesive Soils, held at the University of Colorado, Boulder, Colorado, June, 1960. Sponsored by the Soil Mechanics and Foundations...

Closure of the Breach in Bayocean Peninsula, Oregon
Natural sand, gravel and boulder barrier about 4 mi in length which separated Tillamook Bay from Pacific Ocean, was breached by ocean storm waves; history of erosion and design and construction...

 

 

 

 

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