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Guidance Documents
Construction Guidance Checklist: Conventional and Soil Riprap_2024Construction Guidance Checklist: Cutoff Walls – Grout_2024Construction Guidance Checklist: Cutoff Walls – Sheet Pile_2024Construction Guidance Checklist: Erosion Control Blanket_2024Construction Guidance Checklist: Grouted Boulders_2024Construction Guidance Checklist: Pipe Outfalls_2024Construction Guidance Checklist: Sculpted Concrete_2024Construction Guidance Checklist: Void Filled Riprap_20242015 Colorado Stormwater Legislation memo (SB15-212)2016 Colorado E. coli Toolbox: A Practical Guide for Colorado MS4s2012 Gravel Mining | Guidance for 2D Model Development2012 Gravel Mining | SPR Gravel Pit Berm Failure Technical Analysis2012 Gravel Mining | Technical Review Guidelines for Gravel Mining Activities 20122021 - Policy for Preservation of Floodplains and Land Purchase for Future Improvements2024 Template for Permeable Pavement System Installation Notes2019 Tools for MS4s: Microbial Source Tracking2019 Tools for MS4s: Regulations for E. Coli2019 Tools for MS4s: Stormwater BMPs for E. Coli2019 Tools for MS4s: Using GIS for E. coli Source Investigations and Controls2020 Topsoil Management Guidance
Technical Memorandums
2024 - Investigation of the Water Quality Event and Recommendations for Calculating Water Quality Peak Flows2024 - Imperviousness for Stormwater Control Measures2023 - Determination of Solar Panel Field Runoff Coefficients2023 - Analysis and Recommendations for Updated Land Use-based Percent Impervious Values2023 - Analysis of Source Materials for Bioretention Media in the MHFD Region2023 - Determination of Water-wise Landscape Imperviousness Criteria2022 - Basis for EDB Recommendations: Upstream Impervious Area Versus WQCV Orifice Size for EDBs2021 - Review of Permeable Interlocking Concrete Pavement (PICP) Design and Effect on Outflow Pollutant Concentrations2020- Stream Management Corridor Technical Memo Final2018 - Determination of Runoff Reduction Method Equations (UIA to RPA) based on Multivariable SWMM Analysis2017 - Calibration of Rational Method Volume-Based Runoff Coefficients and Regional Time of Concentration to CUHP v2.0.02017 - Estimation of Runoff and Storage Volumes for Use with Full Spectrum Detention2017 - Storm Inflow Hydrograph Shaping for Detention Design2016 - Determination of the Excess Urban Runoff Volume (EURV) for Full Spectrum Detention Design2016 - Summary of the NOAA Atlas 14 Impact on Rainfall Depths used by UDFCD2016 - Determination of Watershed Predeveloped Peak Unit Flow Rates as the Basis for Detention Basin Design2014 - UDFCD Detention Basin Model Memorandum2012 - Recommended Release Rate from Full‐Spectrum Detention2011 - UDFCD Street Inlet Capacity Technical Memorandum2011 - Description of the Water Quality Capture Optimization Statistical Model (WQ-COSM) for Stormwater BMPs2010 - Hydraulic Efficiency of Street Inlets Common to UDFCD Region2010 -UDFCD Storm Sewer Pipe Material Technical Memorandum 2010
Technical Papers
2025 - Geomorphically Informed Stream Crossing Structures2021 - Flow Frequency Evaluation For Three Watersheds in the Denver Metro Van Bibber Creek, Lena Gulch, and Little Dry Creek2021 - Log Drop Evaluations at Timbers Creek and Rock Creek2021 - Technical and Managerial Succession Planning for Mile High Flood District2020 - Engineered Bioretention Media Literature Review2016 CUHP Recalibration Summary Report2016 - Long-term Hydrologic Assessment of Effect of Full Spectrum Detention on Water Balance and Water Rights2015 - Stormwater Quality Runoff and Reduction from an Aggregate Rooftop in Denver, Colorado2015 - Planning for Variability & Uncertainty: Climate Change and the UDFCD Urban Drainage System2015 - Study to Evaluate the Optimal Locations in a Watershed for Full Spectrum Detention vs. Detaining only the Excess Urban Runoff Volume2014 - Developing Protocols For Consistency in CUHP/SWMM Hydrology For Large Discretized Catchments2014 - Pathogens in Urban Stormwater Systems2014 - Evaluating Potential for Hazardous Sediments in Stormwater Facilities2014 - Evaluating Potential for Hazardous Sediments in Stormwater Facilities Appendices2014 - Evaluation of Rainwater Harvesting With Cloud-Based Infrastructure as a Stormwater Control Measure2014 - Physical Modeling of Overflow Outlets for Extended Detention Stormwater Basins2013 - Extended Detention Basin at Grant Ranch Denver, Colorado 2001-20112013 - Volume-based Runoff Coefficients for use with Rational Method2013 - Observation on Atmospheric Dust Fallout in Denver2013 - Colorado Regulation 85 Nutrient Data Gap Analysis Report2012 - Performance Assessment of Highway Median Inlets CSU 20122012 - Hydraulic Capacity of CDOT Type C and D Area Inlets2011 - Calibration of CUHP2005/SWMM5 Computer Models for Flood Flow Predictions2011 - Extended Detention Basin at Grant Ranch Denver, Colorado 20092011 - Demonstration Projects Illustrating Void-Filled Riprap Applications in Stream Restoration2011 - Description of the Water Quality Capture Optimization Statistical Model (WQ-COSM) for Stormwater BMPs2011 - Porous Asphalt at Denver Wastewater Management Building Denver, Colorado 2008-20102011 - Pervious Concrete at Lakewood Maintenance Facility Lakewood, Colorado 2005-20102011 - Permeable Interlocking Concrete Pavement (PICP) at Denver Wastewater Management Building Denver, Colorado 2008-20102010 - Sustainable Design of Urban Porous Landscape Detention Basin2010 - Incentive Index for Stormwater Low Impact Designs2009 - Catchment Discretization in the Colorado Urban Hydrograph Procedure: A Case Study in the East Toll Gate Creek Watershed, Arapahoe County, Colorado2009 - CSU Report: Hydraulic Efficiency of Grate and Curb Inlets2009 - Modeling Hydraulic and Energy Gradients in Storm Sewers2008 - Can Stormwater BMPs Remove Bacteria?2008 - Consistency Between CUHP and Rational Methods2008 - UDFCD Pervious Concrete CTL Thompson Report 20082007 - Full Spectrum Detention to Control Stormwater Runoff2007 - Stormwater Runoff Modeling; Is it as Accurate as We Think?2005 - Full Spectrum Detention 2005-01-01 Concept Paper2005 - Learning from Nature: Reducing Urban Stormwater Impacts2003 - Stream Protection in Urban Watersheds Through Master Planning2002 - Stormwater Sand Filter Sizing and Design – A Unit Operation Approach2000 - Overflow Risk Analysis For Storm Water Quality Control Basins2000 - Synthetic Runoff Capture and Delivery Curves For Storm Water Quality Control Designs1999 - Two Decades of Stormwater Management Evolution – Presented in Brazil1996 - Design of Low Tailwater Riprap Basins For Storm sewer Pipe Outlets1994 - Finding a “Maximized” Water Quality Capture Volume by Runoff Capture Ratio1994 - Parameters to Report with BMP Monitoring Data1993 - Stormwater BMPS and Technology1990 - Effect of Raingage Density on Runoff Simulation Modeling1989 - BMP Practice Assessment For The Development of Colorado’s Stormwater Management Program1989 - Sizing A Capture Volume for Stormwater Quality Enhancement1981 - Potential Effectiveness of Detention Policies1979 - Reliability of Design Storms in Modeling