1600 Specht Point Road    Suite 209    Fort Collins, CO 80525    Ph 970.488.3111    Fax 970.488.3112      

 


WATER MANAGEMENT

EA engineers and other technical staff have designed embankment structures, storage impoundments and have evaluated the geotechnical and erosional stability of numerous civil structures. Short descriptions of representative projects are listed below by the technical disciplines involved.

Click Here to download our Water Management Project Sheet.   
 


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EA provides management consulting and technical services in four principal business areas:

 

 

MINERS LAKE DAM, WELLINGTON, COLORADO

  


In order to remove a restriction placed by the Colorado State Engineer’s Office at Miners Lake Dam, improvements were made in regard to the downstream slope to 3H:1V (horizontal:vertical), install erosion protection on the upstream face and replace the outlet works of the dam. EA staff performed the seepage and stability analyses in conjunction with these improvements for review by the State Engineer’s Office.

 


Client: North Poudre Irrigation Company 

 
 

SANDBORN LAKE DAM, GREELEY, COLORADO

  
 


Wind and wave erosion on the unprotected upstream face caused a vertical scarp, several feet high in many places, to form at the Sandborn Lake Dam. The dam is located within the city limits of Greeley, and the Colorado State Engineer’s Office is concerned that, if left unchecked, this erosion may affect the stability of the dam. EA staff designed regrading and riprap protection for the upstream face of the dam to repair the deficiencies.
 


Client: City of Greeley, Colorado 

 
 

ANCHO CANYON DAM, NEW MEXICO

  
 


Design of a 35-foot high dam for control of storm flow near Raton, New Mexico. The design included analyses of seepage, slope stability of embankment and foundation material and settlement/consolidation analyses of the foundation materials.
 


Client: Pittsburgh and Midway Coal Co 

 
 

STRACTOR DAM, ARKANSAS

 
 


Design and construction of the reclamation and raise of a 125-foot-high dam near Hot Springs, Arkansas. The project involved laying back the downstream face of the dam to a prescribed angle and concurrently raising and improving the dam for future operations. Work included geotechnical characterization of the earthfill material, design of dam raise, reclamation plan and construction management.
 


Client: Umetco Minerals Corporation 

 
 

YORK CANYON DAMS NOS 1 THROUGH 3, NEW MEXICO

  
 


EA staff provided the following services:

  • Stability analysis and landslide review of Dam No. 2

  • Hydrology review for reclamation of Dam No. 1

  • Review of the design of Phase 1, and the design engineer for Phases 2 and 3

  • Seepage and stability analyses

  • Hydrologic analysis, riprap, filter and drain design

  • Seismic analysis

 

 

Client: Pittsburgh and Midway Coal Co 

 

 
 

THIRD PARTY REVIEW OF DAM, BUNKER, MISSOURI

  
 


Third party review of a proposed 20-foot-raise to a 120-foot-high earthen embankment in Bunker, Missouri. The review was performed to identify areas of potential risk associated with the raise and included hydrology slope stability, settlement/deformation and construction issues.
 

  
 

THIRD PARTY REVIEW OF ARIZONA DAMS, HAYDEN, ARIZONA

  
 


Geotechnical analyses and risk assessment for a 700-acre, 610-foot-high earthfill dam near Hayden, Arizona, two additional earthfill dams near Hayden, Arizona and eight earthfill dams near Tucson, Arizona. Areas of analyses included hydrology, slope stability, settlement/deformation, consultation issues and conformance with regulations.
 

  
 

ROSEMONT COPPER PROJECT, TUCSON, ARIZONA

  
 


Engineering Analytics staff led a regional groundwater flow model project and associated studies required for environmental permitting (EIS, APP) of this proposed open-pit copper mine. An intensive effort by the technical team enabled the regional groundwater flow model to be completed in 10-weeks. The flow model was used to predict impacts to streams, springs, riparian vegetation, and groundwater resources. Open pit dewatering during the active mining phase and pit-lake formation following closure were simulated. A comprehensive sensitivity analysis provided a range of potential impacts based on uncertainties in the hydrogeologic properties.
 

EA staff provided the following services:

  • Regional groundwater flow model

  • Impact analysis

  • Spring analysis

  • Simulated pit dewatering
     



Rosemont Copper Project, Tucson, Arizona

Client: Augusta Resources 
 

DEATH VALLEY REGIONAL FLOW SYSTEM, LAS VEGAS, NEVADA

  
 


Engineering Analytics staff led and coordinated U.S. Geological Survey scientists, academic researchers, and private consultants engaged in three-dimensional groundwater flow modeling using inverse modeling techniques. These regional-scale studies integrated Nevada’s Basin and Range hydrogeology, including faulting, fracturing, degree of welding in volcanic tuffs, hydraulic property variations, desert evapotranspiration, and spring characteristics. Flow model was used to predict flow paths and travel times for potential contaminant releases from the proposed repository.
 



Death Valley Project, Las Vegas, Nevada

Client: U.S. Department of Energy
  
 

DAWN MILL SITE, FORD, WASHINGTON

  
 


Engineering Analytics staff designed, implemented, analyzed, and completed reports on a hydrogeologic investigation that characterized groundwater flow in a historic ore stockpile area at this legacy uranium mill site.
 

 

Client: Dawn Mining Company 

  
 

SAND HOLLOW RESERVOIR ARTIFICIAL RECHARGE RECOVERY SYSTEM, WASHINGTON COUNTY, UTAH

  
 


Engineering Analytics staff completed a hydrogeologic investigation of a reservoir site and designed a well field to capture artificially-recharged water. The well-field utilized natural fracture flow to increase well production and efficiency, while minimizing water loss from the reservoir.
 

 

Client: Washington County Water Conservancy District 

  
 

CLARK, LINCOLN, AND WHITE PINE COUNTIES GROUNDWATER DEVELOPMENT PROJECT, LAS VEGAS, NEVADA

  
 


Engineering Analytics staff provided technical evaluation and strategic recommendations for scientific studies supporting this water-supply project. Reviewed and evaluated scientific studies involving geochemistry, evapotranspiration, groundwater recharge, subsurface geology, water rights, stream base flow, groundwater discharge, and groundwater flow modeling. Implementation of recommendations assisted in having the study findings accepted in legal proceedings.
 



Clark, Lincoln, & White Pine Counties Groundwater Development Project,
Las Vegas, Nevada

Client: Southern Nevada Water Authority
  
 

NUCLEAR WASTE REPOSITORY PROJECT OFFICE INDEPENDENT SCIENTIFIC INVESTIGATIONS PROGRAM, NEVADA

  
 


Engineering Analytics staff performed a groundwater modeling program technical evaluation and provided recommendations for future modeling approaches and supporting studies. Technical gaps that impacted the County’s concerns for environmental, health, and safety risks of radioactive waste isolation were identified and addressed. Even though there had been numerous studies at the Department of Energy’s Yucca Mountain Project there were key, unresolved technical issues remained that could impact the health and safety of the County’s citizens. An interdisciplinary study was designed and implemented to identify the project uncertainties and incongruous study findings that could potentially impact repository performance and result in health and safety issues.
 

 

Client: Nye County 

  
 

YUCCA MOUNTAIN PROJECT, SITE-SATURATED ZONE, LAS VEGAS, NEVADA

  

 


Engineering Analytics staff were accountable for the design, instrumentation, completion, and analyses of multiple aquifer tests and monitoring networks. Aquifer properties used in 3-dimensional numerical modeling at the site and regional scales.
 



Yucca Mountain Project, Las Vegas, Nevada

Client: U.S. Department of Energy
  

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  Engineering Analytics, Inc.
1600 Specht Point Road, Suite 209
Fort Collins, Colorado 80525
Phone: (970) 488-3111
Fax: (970) 488-3112

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