Groundwater specialists

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REGIONAL GROUNDWATER SYSTEMS ANALYSIS


UHL & Associates, Inc. evaluates groundwater systems in a river basin and/or regional aquifer setting for management, strategic planning, and development applications. Some of the key areas that the Firm addresses and analyzes include:

  • Groundwater recharge and sustainability analyses.
  • Climate change impacts on groundwater recharge.
  • Groundwater quality evaluation for drinking and irrigation applications.
  • Strategic planning for use and recharge optimization.
  • Allocation applications and regulatory approaches.
  • Monitoring systems setup and implementation.
  • Managed aquifer recharge applications.

  CASE STUDIES

   LEBANON, AFGHANISTAN, BOTSWANA


LEBANON

CLIENT

USAID and International Resources Group (IRG)

PROJECT:

Litani River Basin – Regional Evaluation & Groundwater Management

(Groundwater Management; Regional Evaluation; Groundwater Modeling)

LOCATION:

Bekaa Valley, Lebanon


UHL & Associates, Inc. developed an analysis of groundwater conditions in the heavily irrigated Bekaa Valley and initiated a program to quantify the impacts of irrigation pumpage on groundwater levels in the valley. The Firm formulated and implemented a field-data collection program for the development of a groundwater management model.

Groundwater recharge analyses were developed for the principal aquifer units in the valley and a "Hydrogeologic Reference Report" was developed to provide an overview and understanding of groundwater conditions in the Upper Litani River Basin (ULRB). The Hydrogeologic Reference Report was used to set the framework for the application of a numerical groundwater model for simulating water-level impacts from present and future groundwater withdrawals.

 

Lebanon Figure 1

 

Download PDF of Hydrogeologic Reference Report

Download PDF of 2013 ESRI Presentation on GIS Tool For Groundwater Basin Analysis

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AFGHANISTAN

CLIENT

USAID and Development Alternatives Inc. (DAI)

PROJECT:

Country Wide Groundwater Assessment

LOCATION:

Afghanistan


afghan mapIn 2003, UHL was retained by DAI to develop an overall assessment of groundwater conditions in Afghanistan at large and to assess potential river basins where groundwater might be in a state of over-development. Vincent Uhl traveled to several river basins and interviewed/met with relevant governmental departments, NGOs and United Nations organizations.

UHL developed an analysis of recharge to the principal aquifer systems in the five major river basins, and developed the scope for elements of an in-depth analysis of river basins where over-development of groundwater is a concern. A technical scope was also developed for river basins where groundwater is under-utilized and represents a potential source for future irrigation use.

Download PDF of the Project Report

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BOTSWANA

CLIENT

Department of Water Affairs, Republic of Botswana

PROJECT:

Maun Groundwater Development Project

Phase 1: Exploration and Resource Assessment

LOCATION:

Maun, Botswana


Maun Botswana mapThe joint venture of Vincent Uhl Associates, Inc. and Water Resource Consultants (Pty) Ltd. (WRC) was contracted by the Department of Water Affairs, Government of Botswana to conduct a groundwater resource assessment and development feasibility study for a 5,000 square mile area in northwest Botswana with the objective of securing a safe sustainable source for the town of Maun to the year 2030. The study area is on the fringes of the Okavango Delta, one of the largest inland deltas in the world. The study was initiated after a major dam project proposed by Snowy Mountain Engineering Corp (SMEC) of Australia on behalf of the government was terminated after a critical review by the IUCN (International Union for the Conservation of Nature). Prior to the study, freshwater resources were thought to be very limited and confined to narrow areas along perennial and seasonal water courses.

UHL and WRC headed the project team which was comprised of 30 technical experts in the fields of remote sensing, vegetation analysis, geomorphology, structural geology, surface water hydrology, hydrogeochemistry, isotope studies, geophysics, hydrogeology, geology, artificial recharge, economics, cost engineering and ecology.

The project resulted in the identification of several new groundwater sources (aquifers) that can be utilized for supply to Maun and the region well into the 21st century.

Principal Technical Activities:

  • Groundwater exploration using airborne geophysics (magnetic and electromagnetic); satellite imagery interpretations and surface geophysical studies to identify areas for field drilling exploration.
  • Groundwater resource investigation through the installation of 50 test wells, completed in the Kalahari Sands. Aquifer pumping tests were run on 46 wells.
  • Two deep bedrock test wells were installed to depths of 1,000 and 247 meters to evaluate groundwater development potential and water quality conditions in deeper bedrock aquifer systems.
  • Groundwater development feasibility and sustainability analysis through aquifer modeling; recharge analysis; and groundwater-surface water interaction study.
  • Supplementary project activities included: artificial recharge feasibility studies; isotope studies and seismic monitoring.

Download PDF of the Phase 1 Executive Summary

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