Project Title—Petaluma River Basin Hydrologic Model

Client Name—Resource management International / City of Petaluma

Project Dates—1997–Present

Project Role—As Senior hydrologist on the project, directed the development of an HEC-1 hydrologic model for the upper Petaluma River Basin. The model was calibrated to data collected from 5 separate storm events. Each storm was characterized by 8 precipitation gages and 5 stream gages. A GIS model was used to distribute the hourly precipitation data over the basin and output the HEC-1 input data for each subbasin. An HEC-2 hydraulic model of the Petaluma River was developed to compute stage discharge relationships at the location of each of the 5 stage gages.

Project Title—Vichy Springs Floodway and Interior Drainage Assessment

Client Name—Vichy Springs Homeowners Association

Project Dates—1998–1999

Project Role—As a technical expert for water resources issues, reviewed the original design documents and permits for the Vichy Springs Subdivision. Based on this review, developed supporting data and hydrologic models for the litigation between the homeowners association and the developer of the Vichy Springs Subdivision.

Project Title—Klamath Water Rights Adjudication

Client Name—Department of Justice and the Bureau of Indian Affairs

Project Dates—1991–Present

Project Role—As a technical expert for hydrologic and water resources issues, developed supporting data and hydrologic models to document and support the instream flow claims for the Klamath Indian Tribes. As part of this adjudication a water quality model was developed to investigate nutrient loading and eutrophication in the 44 square mile Upper Klamath Lake. Hydrologic characteristics and flow requirements were also developed for all of the major streams in the 3000 square mile Upper Klamath Basin. Details of the individual studies in this complex project are described below.

Project Title—Klamath Lake Nutrient Loading Study

Client Name—Bureau of Indian Affairs

Project Dates—1991–Present

Project Role—As project hydrologist, developed a complex water budget model for Upper Klamath Lake, covering all surface and groundwater contributions and losses. Evaluated the impacts on the lake from the existing operating schedule. Reviewed measured water quality parameters and developed historic inflow data for the various components. Incorporated these elements into a custom multi-parameter lake water quality model that predicted the effects of nutrient loading on various lake regulation schedules.

Project Title—Salmon-Clearwater Instream Environmental Habitat Assessment

Client Name—Bureau of Indian Affairs

Project Dates—1991–1993

Project Role—As hydrologist, developed and calibrated hydrologic models for the largest instream flow study ever undertaken. The study included nearly 1,200 drainage basins, covering one-third of the state of Idaho. Reviewed criteria for channel maintenance and stability and developed flow requirements for the preservation of riparian growth. Coordinated study efforts with the USGS, USFS, BIA, state agencies, and the various Indian tribes.

Project Title—Upper Klamath River Basin Hydrologic Characterization

Client Name—Bureau of Indian Affairs

Project Dates—1992–Present

Project Role—Project Engineer in charge of developing a regional hydrologic model for characterizing the streams within the 3,000 sq mi Upper Klamath Basin. The project involved development of a GIS database of subbasin characteristics, a multiple linear regression model for spatial and temporal data used in the model. The model was used to develop flood frequency data for all of the streams in the basin.

Project Title — Oconee River Unsteady Flow Model

Client Name — Georgia Power Corporation

Project Dates — 1993-1994

Project Role — As project engineer, directed the development and calibration of a one-dimensional unsteady flow model for a 75 mile section of the Oconee river below a hydroelectric peaking plant. Reviewed stage discharge time series collected at USGS gages along the study reach. The USGS data was used to create three calibration regimes for low flow high flow and overbank flow. The model results were input into fisheries habitat time series model to develop discharge criteria for the hydroelectric plant.

Project Title—Portugues and Bucana Flood Control Project, Ponce, Puerto Rico

Client Name—Commonwealth of Puerto Rico

Project Dates—1980–1988

Project Role—As hydraulic engineer, produced designs for several supercritical concrete flood control channels through the city of Ponce. Analyzed historic flood records and developed design discharges. Designed and analyzed alternative plans for a sedimentation basin downstream from the Portugues Dam. Designed the outlet works for several river control structures required for the Portugues Dam and the downstream channel improvements.

Project Title—Cerrillos Dam, Puerto Rico

Client Name—Commonwealth of Puerto Rico

Project Dates—1980–1988

Project Role—As hydraulic engineer analyzed historic rainfall records and developed various stage storage alternatives for a cost-benefit analysis of an earth-filled dam. Designs were based on a consideration of water supply, flood control, and irrigation requirements. Developed discharge criteria and designed an 18' construction diversion tunnel through a mountain to bypass the dam site.

Project Title—South Florida Water Supply Study

Client Name—South Florida Water Management District

Project Dates—1986–1987

Project Role—As project engineer, analyzed historical inflow data and developed design discharges for the flood control and discharge structures on Lake Okeechobee. Developed wave runup criteria required for levee designs for various lake regulation schedules. Produced specifications for structure modifications and various changes in the regulation schedules.

Project Title—Portugues Dam, Puerto Rico

Client Name—Commonwealth of Puerto Rico

Project Dates—1980–1988

Project Role—As hydraulic engineer developed alternative bypass schemes for construction diversion of the Portugues River around the proposed Portugues Dam site. Designed regulating and emergency outlet sluices through the concrete dam. Developed design inflows to reservoir and produced stage storage criteria for routing of design inflow to determine optimum dam height. Responsible for sizing and designing the emergency spillway.

Project Title—Las Trampas EIR

Client Name—East Bay Regional Park District

Project Dates—1992

Project Role—As project hydrologist, developed the hydrologic study in support of the Las Trampas master plan. Developed rainfall runoff characteristics, produced flood inundation maps, and analyzed the effects of each plan element on water quality.

Project Title—Upper Klamath River Basin Instream Flow Study

Client Name—Bureau of Indian Affairs

Project Dates—1991–Present

Project Role—As hydrologist, developed instream flow recommendations for fisheries population study. Developed hydrologic criteria for existing and natural basin conditions. Prescribed channel and riparian maintenance flows for habitat stability and wildlife maintenance.

Project Title—Owens Gorge Instream Flow Study

Client Name—Los Angeles Department of Water and Power

Project Dates—1991–1992

Project Role—As hydrologist, designed and oversaw an instream flow study in a stream reach that had been dewatered for some years, aimed at determining what instream flows would be needed to restore native and sport fish populations in the reach. Estimated amounts of water needed to recharge the groundwater under the stream bed.

Project Title—Owens River Sedimentation Study

Client Name—Los Angeles Department of Water and Power

Project Dates—1993–1994

Project Role—Project Engineer in charge of developing and conducting a sediment transport study of the Owens River. The project covering 10 miles between Crowley Dam and Pleasant Valley Reservoir involved bed load, suspended load, and bed material samples. This information was then used to construct a sediment transport model for the stream reach. The study purpose was to determine the non-eroding discharge for restoring the Owens Gorge riparian habitat.

Project Title—Owens Gorge Seepage Study

Client Name—Los Angeles Department of Water and Power

Project Dates—1992

Project Role—In support of the instream flow study, established transects in Owens Gorge and had teams measure flows through transects placed for accurate flow measurement to permit estimates of seepage losses of a fixed release at the upstream end of the reach.

Project Title—Vandenberg Air Force Base Stormwater Management Plan

Client Name—U.S. Air Force

Project Dates—1992

Project Role—As hydrologist, developed and carried out a site survey of the base for industrial activities. Analyzed the base's storm water conveyance systems and developed a monitoring plan for the base. Compiled a list, with locations, of potential chemicals for monitoring, and negotiated with regional water quality control board to reduce monitoring requirements.

Project Title—Onizuka Air Force Base Storm Water Permit

Client Name—U.S. Air Force

Project Dates—1992

Project Role—As hydrologist, reviewed existing industrial activities and determined compliance requirements for Santa Clara NPDES storm water permit. Reviewed storm water management practices and made recommendations to let the base avoid being covered by a storm water permit.

Project Title — Buckley Air National Guard Base Stormwater Management Plan

Client Name — Air National Guard Readiness Center

Project Dates — 1994

Project Role — As hydrologist, developed and carried out a site survey of the base for industrial activities. Analyzed the base's storm water conveyance systems and developed a monitoring plan for the base. Compiled a list, with locations, of potential chemicals for monitoring.

Project Title—Discovery Bay EIR

Client Name—Contra Costa County

Project Dates—1994

Project Role—As project hydrologist, developed the hydrologic study in support of the Discovery Bay development. Developed rainfall runoff characteristics, reviewed flood inundation maps, and analyzed the effects of tidal flushing and pumping on the network of lakes and canals. Each plan alternative was reviewed for the effects on water quality in the project and surrounding delta.

Project Title— St. Lucie Marsh Restoration Study

Client Name— Port St. Lucie

Project Dates— 1988

Project Role—As project hydrologist, developed a circulatory system for the restoration/mitigation of a threatened marsh. Analyzed tidal variations and water surface profiles at various locations through the system. Developed a system of structures and gates to allow tidal fluctuations in two adjacent rivers to force water through the system. Developed flood duration-inundation data for biologists to use in the habitat restoration.

Project Title—Water Management Studies

Client Name—Various

Project Dates—1984–1988

Project Role—As project hydrologist, developed hydrologic design of numerous multi-objective water quality improvement projects. Designs involved structural and non-structural alternatives required to meet regulatory requirements for preventing water quality degradation. Prepared reports to assist in the water management permit applications, and developed mitigation plans for wetlands restoration. Performed pre- and post-project hydraulic analyses of urban development projects.

Project Title—Bear Creek Urban Flood Study, St. Petersburg, Florida

Client Name—City of St. Petersburg

Project Dates—1984

Project Role—Hydraulic Engineer

Innovative/Unique Technology, Equipment, Problem Solving Capability: Analyzed existing conditions of the Bear Creek drainage basin. Developed design storm and discharge criteria from historic rainfall records. Defined areas of various degrees of flood risk, and presented recommendations for structural and nonstructural modifications to reduce that risk.

Project Title—Longbranch Creek Drainage Improvement Project

Client Name—City of Jacksonville

Project Dates—1987

Project Role—As project hydraulic engineer, designed channel improvements for Longbranch Creek. Developed runoff volumes and design flows from the adjacent heavily developed area. Prepared channel modifications, including lining and drop structures required to prevent flooding from the 25-year storm event. Prepared project report and presented proposed modifications to the city engineering department.

Project Title—Portugues and Cerrillos Rivers, Puerto Rico

Client Name—Commonwealth of Puerto Rico

Project Dates—1981–1988

Project Role—As project hydraulic engineer, conducted an analysis of existing flood conditions on the upper reaches of the Portugues and Cerrillos basins. Developed hydraulic models to compute water surface profiles for multiple frequency floods. Analyzed the stage discharge capacities of both rivers and conducted river overtopping frequency analysis for use in computing flood damages.

Project Title—Sugarloaf Key Pollution Abatement Study

Client Name—Monroe County

Project Dates—1985

Project Role—As hydrologist, performed hydraulic analysis of existing capacity of drainage canals. Developed design recommendations to increase tidal flushing of canals to reduce suspended pollutants.

Project Title—Clay County Flood Insurance Study

Client Name—Black Oak Development Co.

Project Dates—1987–1988

Project Role—As project hydrologist, analyzed rainfall data and various tidal conditions to develop water surface profiles of the St. Johns River and Black Creek. Developed modifications to the existing flood insurance rate map, and produced a report for the water management district.

Project Title—Bear Creek Flood Insurance Study

Client Name—Bear County, Georgia

Project Dates—1987–1988

Project Role—As project hydraulic engineer, analyzed existing river system for a Flood Insurance Administration study. Developed design discharges and water surface profiles for existing natural river system. Calibrated model to existing data. Determined areas of flood risk and prepared flooded-area maps.

Project Title—Solano Irrigation District

Client Name—Solano Irrigation District, California

Project Dates—1991

Project Role—Project Engineer

Innovative/Unique Technology, Equipment, Problem Solving Capability: Analyzed existing irrigation system for efficiency and condition of the physical facilities. Prepared a report delineating areas recommended for repair or replacement. Prepared detailed cost estimates for the recommended $25 million in suggested modifications.

Project Title—San Luis Canal Company Seepage Study

Client Name—San Luis Canal Company, California

Project Dates—1991

Project Role—As project hydrologist, developed a detailed water balance study considering surface water supplies, groundwater pumping, and irrigation efficiency. Reviewed existing geologic information and developed groundwater flow parameters. Performed detailed field studies for canal seepage analysis and irrigation operation analysis.