Directory

Public engineering firm profile

Six Rivers Geosciences

Geotechnical, engineering geology, hydrogeology, and environmental consulting services

Services
22
Projects
6
Leaders
1

Overview

Six Rivers Geosciences provides geologic consulting services to public and private clients. Based in Humboldt County, California, the practice has extensive consulting expertise in geotechnical and engineering geology, geomorphologic studies, geologic mapping, geohazard and environmental assessments, and hydrogeology for large-scale transportation and infrastructure projects. It combines multidisciplinary expertise with a comprehensive understanding of regulations to deliver technically excellent solutions to complex geoscience problems.

Services

Hydrogeologic Services

Groundwater and surface water evaluations to assist with water resource planning, well siting, and aquifer characterization.

Environmental Services

Comprehensive environmental assessment and planning services to identify site issues and coordinate compliant waste disposal.

Project Support and Compliance

Rigorous technical reviews and quality control oversight to keep engineering projects aligned with regulatory standards.

Industries

Firm type

Project types

Projects

On-Call Hydraulics Engineering Support Services, San Francisco Bay Region, California

San Francisco Bay Region, California | California Department of Transportation (Caltrans) | Transportation

Provision of consultation, research, professional, and technical support and services required for Hydrology and Water Quality Studies to the California Department of Transportation (Caltrans), District 4 Division of Design, Office of Hydraulic Engineering Program, on an as-needed basis. These services assist with the maintenance, development, and construction of proposed transportation facilities.

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On-Call Water Quality Support Services, San Francisco Bay Region, California

San Francisco Bay Region, California | California Department of Transportation (Caltrans) | Transportation

Provision of consultation, research, professional, and technical support and services required for Water Quality Studies to the California Department of Transportation (Caltrans), District 4 Division of Environmental Water Quality Program, on an as-needed basis.

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On-Call Geotechnical Engineering Services, Various Counties, California

Various Counties, California | California Department of Transportation (Caltrans) | Transportation

Geological Engineering and Hydrogeology services to support the Caltrans Division of Engineering Services, Office of Geotechnical Services, on an as-needed basis to assist with the maintenance, development, and construction of proposed transportation facilities in Districts 7, 8, 11, and 12.

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Landslide Risk Tool Development, San Francisco Bay Region, California

San Francisco Bay Region, California | Pacific Gas and Electric Company (PG&E) | Utilities

Provision of geologic and hydrogeologic support to Pacific Gas and Electric Company (PG&E) in the development of an update to the seismically induced landslide model used by the System Earthquake Risk Assessment (SERA) risk tool. The study focused on improving estimates of landslide deformation of existing landslides affecting assets within the greater nine-county San Francisco Bay Area.

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Liquefaction and Lateral Spread Study, San Francisco Bay Region, California

San Francisco Bay Region, California | Pacific Gas and Electric Company (PG&E) | Utilities

Geologic and hydrogeologic support to Pacific Gas and Electric Company (PG&E) in the development of predictive liquefaction and lateral spread maps and algorithms to improve estimates of ground failure affecting PG&E assets within the greater nine-county San Francisco Bay Area as part of the Integrated Seismic Risk Management Program.

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Van Duzen River Hydrologic and Geomorphic Evaluations, California

Humboldt County, California | Pacific Gas and Electric Company (PG&E) | Utilities

Hydrologic and geomorphic evaluations and channel migration zone mapping to characterize the risk of flooding and erosion to PG&E's Rio Del Tap 60 kV transmission line and appurtenant structures crossing the Van Duzen River south of Hydesville in Humboldt County.

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Software

Credentials and affiliations

Leadership

Jennifer Mendonca Wilson

Principal Geologist

PG, CEG, CHG

Ms. Wilson has more than 19 years of experience working on the planning, execution, and management of environmental, hydrologic, geotechnical engineering, and engineering geologic projects for local, federal, and state agencies, and private clients. Her experience includes levee, flood control, and water conveyance studies, geotechnical investigations, geohazard assessments, probabilistic seismic hazard analyses, groundwater and hydrologic studies, environmental assessments, surficial mapping projects, and subsurface investigations.

Publications

Spatiotemporal groundwater modeling for hazard analyses in the San Francisco Bay region

article | Greenfield et al. including Wilson, J.M. | 2023

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A tool to evaluate deformation from seismically induced landslides in the San Francisco Bay Area for system-wide risk analyses

article | Greenfield, Wade, Wilson, Hitchcock, Kottke, Boone, and Wartman | 2023

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A tool to evaluate liquefaction and resulting permanent ground deformation in the San Francisco Bay Area

article | Greenfield, Wade, Wilson, Hitchcock, Kottke, and Boone | 2023

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An Introduction to Consulting Geology

article | Wilson, J. M. | 2020

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Case Study - Characterization, Risk Management, and Remediation Strategies to Shorten Timeline for Potential Site Reuse

article | Helge, J., Alexander, J., Emery-Tonkovich, K., Wilson, J., Whearty, J., and Johnson, K. | 2018

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Applications of GIS Mapping and Analysis to Levee Studies in the Sacramento Valley, California

article | Pearce, J. T., Wilson, J. M., Brossy, C. C., and Sowers, J. M. | 2016

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Developing a Geomorphic Approach to Assessing Levee Underseepage

article | Wilson, J., Pearce, J, and Sowers, J. | 2013

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Preliminary Results on Neotectonic and Geomorphic Evolution of the Northeastern Avawatz Mountains, Southern Death Valley, California

article | Mendonça, J. | 2005

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Offices

No public values listed.