We Restored the stream with streamlined thinking.

RESPEC provides clients with effective, innovative, and practical restoration solutions by adapting to ever-changing permitting requirements.  Experienced in all aspects of stream and channel restoration, our scientists and engineers are experts in restoration—characterization of existing conditions to process-based restoration designs to overseeing project implementation. We establish thorough baseline information from which restoration prescriptions are developed.

Identifying the natural processes and human-imposed constraints that drive restoration solutions, RESPEC's professional team has a successful track record of performing river-reach assessments and feasibility studies that are founded upon a complete understanding of both the natural processes that affect the system as well as human-imposed constraints.  Supplementing our hands-on design experience, our staff is comprehensively trained in applied fluvial geomorphology and natural channel design. We are adept at developing construction drawings and specifications to address client needs, whether adhering to rigorous design protocols and requirements or tailoring design documentation to match contractor capabilities. Through almost 50 years of providing construction oversight on stream-restoration projects, RESPEC professionals have developed the insight and communication skills necessary to work with client representatives, resource agency personnel, contractors, and field crews to achieve successful results.

Lake, River, & Stream Restoration Flyer


    • Channel Migration Zones (CMZ)
    • Process-Based Restoration Design
    • Construction Documents
    • Stream Reach Assessment and Feasibility Analyses
    • Sediment-Transport Analyses
    • Construction Oversight and Management
    • Performance Monitoring and Evaluation

Lake, River, & Stream Restoration projects

Learn more about related projects where RESPEC has proven our expertise in this area.

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Belle Fourche River Watershed Implementation Project

Correcting sediment and bacteria impairments in and around the Belle Fourche River Watershed.

Benton County Irrigation Scheduler

Creating a web-based application (Irrigation Management Assistant) to help manage irrigation.

Big Sioux River Sediment and Bacteria Total Maximum Daily Load

Developing sediment and bacteria Total Maximum Daily Loads for the Big Sioux River.

Big Sioux Water Quality Trading Project

Assessing the sediment and bacteria impairments in the Central Big Sioux River Watershed and reducing pollution through a water quality trading.

Cape Fear River Watershed Model

Developing a Soil and Water Assessment Tool model to improve water quality in the Cape Fear River Watershed.

Clark Fork River Plains Reach Assessment

Identifying restoration alternatives to improve conditions and restore natural channel processes while protecting critical infrastructure and economically important lands.

Dead Run Stream Restoration

Assessing channel conditions in Dead Run Stream and designing stream improvements through McLean Central and Dead Run Stream Valley Parks.

Decision-Support Tools for Watershed Management

Developing custom tools to interpret model results for watershed management.

Illinois River Total Maximum Daily Load

Modeling water quality and developing a Total Maximum Daily Load for the Illinois River Watershed.

Kleenburn Coal Mine Project

Addressing physical and environmental hazards associated with the Kleenburn Coal Mine.

Long Lake Creek Corridor Improvements

Establishing a more natural, sinuous channel and restoring wetlands in an area of a decommissioned wastewater treatment plant.

Lower Gallatin Watershed Restoration Plan

Providing a framework for implementing water quality improvements for sediment, nutrient, and E. coli pollutants on 15 impaired stream segments in the Lower Gallatin Watershed.

Middle North Platte Watershed Study

Creating an inventory of water and land resources within a Wyoming watershed.

Missouri River Ecosystem Restoration

Developing and implementing effective planning strategies for the Missouri River.

Mussel Data Analysis

Assessing and monitoring the condition of a mussel community during construction and operation of a 366-meter navigation lock.

Nutrient Reductions

Helping Minnesota implement its nutrient-reduction strategy and reduce its impact on downstream waters supporting local, state, and international water quality efforts.

Piney Creek Major Drainageway Plan

Mitigating severe channel degradation, erosion, and heavy sediment deposition in the Piney Creek drainageway.

Red River of the North Stressor-Response Model

Examining the relationships between the biological community and nutrients in the International Red River Watershed.

Saltese Flats Wetlands Restoration

Restoring the natural hydrology after a century of change.

Samson Pipeline Release Spill Investigation and Cleanup

Investigating environmental impacts from an oil-and-gas spill.

SARA Water Quality Modeling Tool Development

Developing software tools to facilitate watershed modeling and planning in San Antonio River Authority’s (SARA) watersheds.

Spring Creek Watershed Restoration

Keeping streams clean in the Black Hills.

Story Mill Community Park Stream Restoration

Restoring ecological functions to a riverine system in an urban environment around a community park.

Temperature Total Maximum Daily Load Assessment

Supporting aquatic life by defining allowable heat loads and implementation plans for streams in the Black Hills.

Yellow Medicine Project – One Watershed One Plan

Guiding southwest Minnesota partners to develop the next generation of watershed planning for the Yellow Medicine River.
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Lake, River, & Stream Restoration products

RESPEC’s product line is geared towards making businesses and organizations better, faster, smarter, and safer. Our products benefit clients in need of greater efficiency, accuracy, and cost savings.

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BASINS integrates environmental data, analysis tools and watershed and water quality models to assist in managing watersheds and developing Total Maximum Daily Loads (TMDLs).


HSPEXP+—An enhanced expert system for calibration of HSPF.

Hydrologic Simulation Program‑FORTRAN (HSPF)

Hydrologic Simulation Program‑FORTRAN (known as HSPF) is an analytical tool that has applications in planning, designing, and operating water-resources systems. 

Hydrologic Simulation Program–Python (HSP2)

RESPEC’s Hydrologic Simulation Program–Python (HSP2) model uses modern technology to improve upon its predecessor Hydrologic Simulation Program–FORTAN (HSPF) model.

SARA Load Reduction Tool  

SARA Load Reduction Tool — Allowing users to determine the constituent load reductions needed to reach water quality standards in model reaches within a watershed.

SARA TS Utility  

SARA Timeseries Utility supports the analysis and management of time-varying environmental data.

Scenario Application Manager (SAM)

RESPEC’s HSPF Scenario Application Manager (SAM) is a comprehensive decision-support tool for planning and implementing targeted actions to restore or protect water quality.
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Chris Walla, PE
Manager, Environmental Services


Mike Rotar, PE, CFM
Manager, Surface Water Engineering