When it rains, it pours potential flood challenges. We help you manage floods with floodplain modeling and management expertise.

A recognized leader in floodplain management, RESPEC protects people and property and balances the challenge of preserving riparian areas, demonstrating environmental stewardship, and sustaining economic development. Using the latest technology in floodplain mapping, such as two-dimensional (2D) modeling, proprietary software, and interactive PDF floodplain maps, our professional team clearly defines the flood risk and communicates complex information and changes to all of the project stakeholders to ensure collaboration and best results.

Through innovative tools and thorough public education, RESPEC delivers a consistent, high-quality process and product. Knowing the wide impact of floodplain studies on the public’s safety, welfare, and finances, RESPEC uses a multi-pronged approach to ensure technically accurate and clear floodplain maps and to provide public outreach by using public meetings, websites, social media, and mailings.  Our data-driven maps for notifying landowners of floodplain changes concisely depict the floodplain changes at a specific property. RESPEC has successfully submitted many Conditional Letter of Map Revisions (CLOMRs) and Letter of Map Revisions (LOMRs) on behalf of clients throughout the US.


    • Floodplain Management
    • CLOMR and LOMR Submittals
    • Floodplain Mapping and 2D Modeling
    • Federal Emergency Management Agency (FEMA) Compliance
    • Geospatial Software and Databases
    • Web-Based Mapping Applications
    • Public Outreach and Education

Flood Control & Management projects

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

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Big Sioux Flood Inundation System

Developing a Flood Inundation System for the Big Sioux River Basin in eastern South Dakota.

Coal Creek Rock Creek Master Plan

Accelerating major drainageway planning studies in Colorado.

High Line Canal

Developing practical solutions for repurposing the High Line Canal for collecting and treating stormwater runoff.

Long Lake Creek Corridor Improvements

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

Missouri River Ecosystem Restoration

Developing and implementing effective planning strategies for the Missouri River.

Montana Map Modernization and Risk MAP

Providing high-quality flood maps and information to minimize threats to life and property.

Piney Creek Major Drainageway Plan

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

US Highway 24 Fountain Creek and Waldo Canyon

Evaluating damage and mitigation options after devastating fires and severe flooding in Colorado.
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Flood Control & Management 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. 
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Matthew Johnson, PE, CFM
Project Engineer


Rick Moser, PE
Vice President, Water & Natural Resources