GLA geologists and hydrogeologists delineate and characterize aquifers using geologic mapping, borehole and surface geophysics, construction of geologic and hydrogeologic cross sections and fence diagrams, development of three-dimensional geologic models using Leapfrog or similar software, and aquifer testing and analysis to assist with:

Groundwater models help clients make informed water supply, mining, and environmental remediation decisions by evaluating how water and contaminants move through complex subsurface systems. Our hydrogeologists construct and calibrate reliable, defensible models to assess past, present, and future groundwater conditions.
Geo-Logic Associates applies a wide range of industry-standard tools for groundwater flow, solute transport, geochemical modeling, landfill performance, coupled surface/subsurface flow, and parameter optimization, including MODFLOW, SEAWAT, SUTRA, HYDRUS, PHREEQC, Geochemist Workbench, PHT3D, T2VOC, HELP, ParFlow, PEST, and UCODE.

Models support:

Geo-Logic Associates’ hydrologists and hydrogeologists bring expertise that spans the hydrologic cycle and the movement, distribution, and quality of surface water, including surface runoff, watershed management, water quality, and structural control. We provide the analyses, modeling, planning, and permitting support needed to help clients manage water resources and water infrastructure effectively.

Our geochemists use water quality, soil, sediment, and rock chemistry to evaluate how elements and contaminants move, transform, and interact within natural systems. These evaluations help clients identify contaminant sources, understand groundwater flow paths, predict fate and transport, and manage water resources more effectively.

Capabilities include:

Water rights planning requires both technical expertise and a thorough understanding of the legal and regulatory frameworks that govern water use. Our specialists help clients meet current and future water demands through strategic management of existing water rights, acquisition of new authorizations, and innovative approaches to developing and utilizing available water resources.

In addition to providing technical hydrologic analyses, we assist clients in navigating state adjudication and administrative processes, interstate water compacts, Pueblo and Tribal water rights settlements, and other agreements and operational protocols that influence water rights administration and management. Services include:

Our hydrologists and hydrogeologists help clients develop, manage, and sustain groundwater, surface water, and recycled water resources. We work with state and local governments, water districts, and private water companies to support water supply planning, infrastructure development, regulatory compliance, and long-term resource management. Our team also brings extensive experience in the permitting, design, construction, testing, operation, and maintenance of water supply wells ranging from shallow, small-capacity systems to deep, high-capacity well fields serving growing communities. Services include:

With established expertise in vadose zone processes, our hydrologists have provided expertise on technical issues related to litigation and other investigations that have included characterization of the vadose zone and site hydrogeology numerical modeling of volatile organic compounds (VOCs), development of technical opinions regarding the source and distribution of contaminants attributed to numerous Potential Responsible Parties (PRPs), and expert testimony. Vadose zone hydrology services include:

Our experts help clients develop sustainable water supplies through aquifer storage and recovery (ASR) and managed aquifer recharge (MAR). From project conception through implementation and long-term operations, we provide the technical, regulatory, and operational support needed to recharge, recover, and manage groundwater resources effectively.

Services include:

Our instrumentation and automation specialists deliver precise, reliable monitoring and data collection solutions that support environmental, hydrogeologic, geotechnical, and construction quality assurance projects. We design, install, and operate advanced systems that provide accurate, consistent data across a wide range of field conditions and project environments.

Applications include: