Graham Matthews & Associates

Responsible Consulting for Environmental Management & Stewardship

GMA is committed to both the development and implementation of projects that improve and restore the natural environment. GMA’s primary focus is on the quality and efficacy of work produced, with special attention paid to identifying and defining the specific, relevant issues of a project, and providing thorough, concise analysis.

Stream Restoration

Stream and Watershed Restoration Design, Implementation, and Monitoring:

Development of stream restoration projects emphasizing geomorphic considerations and management goals;

Civil engineering services for survey and design using state of the art survey equipment and AutoCAD 2010 Civil 3D software;

Detailed topographic mapping of project sites includes bathymetric mapping;

Construction management, inspection, documentation, project monitoring, and as-built surveys; and

Pre and post project monitoring to assess implementation.

Wood River Channel and Wetland Restoration Project

Winner of the 2003 International Erosion Control Association (IECA) Grand Environmental Achievement Award

Geomorphic Data Collection & Analysis

Hydrologic/Geomorphic Data Collection, Analysis, and Modeling:

Installation and operation of monitoring stations for streamflow and other hydrologic and climatic parameters;

Streamflow measurements and discharge rating curves;

Acoustic Doppler Current Profiler (ADCP) for discharge, velocity profiling, and bathymetric surveys;

Sediment transport: suspended sediment and bedload;

Remote sensing mapping and interpretation;

Computer modeling and analysis of open channel, riverine, wetland and estuarine systems using 1-d and 2-d models; and

Computer modeling and analysis of hydrologic systems, including terrain analysis utilizing ^© ESRI ArcMap 9.3 software.

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Geologic Services

Geologic Investigation & Engineering Geology:

Geologic surveys and analyses related to landslide hazards, sediment budgets, erosion control, surface and groundwater quantity and quality, fluvial geomorphology, and watershed restoration.

Landslide inventory and risk assessment;

Landslide stabilization design, inspection, and monitoring;

Grading plan design, inspection, and review;

Geologic input: road construction, maintenance, and decommissioning;

Geologic input: timber harvest plans and mine plan of operations;

Bridge and culvert flood capacity and scour design;

Erosion control plan development, inspection, implementation, and review; and

Environmental analysis and documentation for CEQA, NEPA, and other permits.