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Watershed Stormwater Master Plans

Antelope Creek Watershed Basin Management Plan


Antelope Creek Watershed Basin Management Plan

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Cover and Table of Contents (352 K)
Executive Summary (623 K)
Section 1 – Introduction and Purpose (2.71 M)
1.1. Introduction and Purpose
1.2. Basin Plan Goals and Objectives
Section 2 – Public Participation and Education (153 K)
2.1. Introduction
2.2. Core Work Group
2.3. Advisory Council
2.4. Open House Events
2.5. Stakeholder Meetings
2.6. Newsletter and Website
Section 3 – Watershed Inventory (1.33 M)
3.1. Introduction
3.2. Collection of Existing Information
  • 3.2.1 Physical Setting
  • 3.2.2 Land-Use
  • 3.2.3 Storm Drainage System
  • 3.2.4 Hydrologic and Hydraulic Data
3.3. Historic Water Quality Data
3.4. Existing Water Quality Projects
3.5. DryWeather Survey
3.6. Pollutants and Pollution Sources
3.6.1 Stormwater Permits
3.7. GIS Database
Section 4 – TMDL Assessment (330 K)
4.1. Introduction
4.2. Antelope Creek TMDL
4.3. State and Local Watershed TMDLs
4.4. Pollutants
  • 4.4.1 E. coli
  • 4.4.2 Ammonia
  • 4.4.3 Other Constituents of Concern
4.5. Summary and Conclusions
Section 5 – Water Quality Monitoring (2.78 M)
5.1. Overview of Available Water Quality Data
  • 5.1.1 Historic Data (Primarily 2002-2009)
  • 5.1.2 Recent Data (2010-2011)
5.2. General Water Quality Evaluation Principles
5.3. Historic Water Quality Sampling Results
  • 5.3.1 In-stream Water Quality
  • 5.3.2 DryWeather Storm Drainage System Screening
  • 5.3.3 Stormwater Quality Monitoring
  • 5.3.4 Summary and Conclusions for Historic Monitoring Data
5.4. 2010-2011 Water Quality Monitoring Activities
  • 5.4.1 2010-11 Sampling Program Overview
  • 5.4.2 In-Stream Sampling Results
  • 5.4.3 DryWeather Outfall Investigations and Sampling Results
5.5. Overall Summary and Conclusions
Section 6 – Pollution Sources and Control Strategies (234 K)
6.1 Introduction
6.2. Pollutants
  • 6.2.1 WinSLAMM Setup and Scenarios
  • 6.2.2 WinSLAMM Results – Flow and Pollutant Sources
  • 6.2.3 WinSLAMM Results – BMP Removal Effectiveness
6.3. Structural BMPs
  • 6.3.1 Selection Criteria
6.4. Non-Structural BMPs
6.5. Conclusion
6.6. Recommendations
Section 7 – BMP Site Inventory (2.14 M)
7.1. Introduction
7.2. General Potential BMP Site Selection
  • 7.2.1 Field Screening Potential Sites
  • 7.2.2 Desktop Review of Potential Sites
  • 7.2.3 Develop Watershed Specific Selection Criteria
  • 7.2.4 Rank and Select Potential Project Sites
7.3. Antelope Creek Potential BMP Site Selection
  • 7.3.1 Field Screening
  • 7.3.2 Antelope Creek Desktop Review
  • 7.3.3 Antelope Creek Site Selection Key Criteria List
  • 7.3.4 Antelope Creek Selected Sites
7.4. Non-Structural Sites
7.5. Conclusion
Section 8 – Management Practices – Recommended Projects/Programs (6.41 M)
8.1. Introduction
8.2. Project and Program Selection Overview
8.3. Non-Structural/Programmatic Recommendations
  • 8.3.1 Expansion of Existing Programs
  • 8.3.2 New Programs
8.4. Structural Project Recommendations
  • 8.4.1 Prioritization Methodology
  • 8.4.2 Project Descriptions
Section 9 – Recommendations City-wide (727 K)
9.1. Introduction
9.2. City-wide Recommendation Overview
9.3. City-wide Recommendations
9.4. Developed Watershed Recommendations
  • 9.4.1 Non-structural Recommendations
  • 9.4.2 Structural Recommendations
9.5. Undeveloped Watershed Recommendations
  • 9.5.1 Non-structural Recommendations
  • 9.5.2 Structural Recommendations
Section 10 – Implementation (4.43 M)
10.1. Introduction
10.2. Implementation Overview
10.3. Phased Implementation Strategy
  • 10.3.1 Phase One
10.4. Plan Revisions and Additional Phases
10.5. Structural Demonstration Projects (Basin-wide)
10.6. Other Opportunities
10.7. Implementation Schedule and Milestones
10.8. Monitoring Milestones and Schedule
  • 10.8.1 Sampling at AC-9 – Confluence with Salt Creek
  • 10.8.2 Sub-basin Sampling
10.9. Evaluative Criteria
10.10. Resource Needs
Section 11 - Glossary of Terms And References (57 K)
Glossary of Terms
References

List of Figures

  • Figure ES-1: Antelope Creek Location Map
  • Figure ES-2. Antelope Park Sub-Basin Projects
  • Figure 1-1. Comprehensive Watershed Management Plan Status
  • Figure 1-2. Basin Plan Project Area
  • Figure 1-3. Effective 100-Year Floodplain
  • Figure 1-4. Antelope Creek Watershed Planning Areas
  • Figure 3-1. Existing Land Use
  • Figure 3-2. Storm Drainage System
  • Figure 4-1. State of Nebraska NDEQ TMDL Listed Water Bodies for Lincoln/Lancaster Co. Area
  • Figure 4-2. Box and Whisker Plots of Fecal Coliform in Stormwater Data
  • Figure 5-1. 2009 Antelope Creek In-stream Sampling Locations
  • Figure 5-2. Monthly E. coli at State Fairgrounds
  • Figure 5-3. E. coli vs. Flow Data at State Fairgrounds
  • Figure 5-4. E. coli Sampling Results on Antelope Creek
  • Figure 5-5. Total Ammonia at State Fairgrounds
  • Figure 5-6. Chloride at State Fairgrounds
  • Figure 5-7. Chloride vs. Conductivity at State Fairgrounds
  • Figure 5-8. Flow Versus Conductivity at State Fairgrounds
  • Figure 5-9. Selenium vs. Chloride at State Fairgrounds
  • Figure 5-10. EA Sampling Location Map
  • Figure 5-11. 2010-2011 Dry Weather Sampling Results for Antelope Creek
  • Figure 5-12. 2010-2011 Wet Weather Sampling Results for Antelope Creek
  • Figure 5-13. Flow Conditions During 2010-2011 Sampling Events
  • Figure 5-14. Comparison of 2010-2011 Flow Estimates to Other Flow Data Collected on Antelope Creek
  • Figure 5-15. 2010-2011 Boxplots of All 2010-2011 Sampling Results for Antelope Creek
  • Figure 5-16. Boxplots of Annual Sampling Results for Antelope Creek at the State Fairgrounds (AC-9)
  • Figure 5-17. 2010-2011 Geometric Mean E. coli Concentrations at AC-1, AC-4 and AC-9
  • Figure 5-18. 2010-2011 Dry Weather Synoptic Sampling Results for Antelope Creek and Flowing Outfalls
  • Figure 5-19. 2010-2011 Sediment Sampling Results for Antelope Creek
  • Figure 7-1. Potential BMP Sites
  • Figure 8-1. Bridge Locations
  • Figure 8-2. Project Locations
  • Figure 8-3. Antelope Park Channel and Wetland Enhancements from Van Dorn to Sheridan Boulevard
  • Figure 8-4. Channel Enhancements from South Street to Van Dorn Street
  • Figure 8-5. Bioretention Areas SW of 33rd and South St
  • Figure 8-6. Antelope Park: A Street to South Street
  • Figure 8-7. Roberts Park
  • Figure 8-8. Lincoln Children's Zoo
  • Figure 8-9. Woods Park
  • Figure 8-10. Gere Library
  • Figure 8-11. Eden Park
  • Figure 8-12. Extended Detention Cell near 60th and South
  • Figure 8-13. Labyrinth Weir on Antelope Creek
  • Figure 8-14. Van Dorn Plaza and U.S. Post Office
  • Figure 8-15. SE of 40th and Capital Parkway
  • Figure 9-1. Lincoln Future Growth Tier Map
  • Figure 10-1. Proposed Sub-basin Layout
  • Figure 10-2. Antelope Park Sub-Basin Phase One
  • Figure 10-3. Rainfall Frequency for Lincoln Municipal Airport
  • Figure 10-4. Antelope Park Sub-Basin Projects

List of Tables

  • Table ES-1. Basin Plan Advisory Council
  • Table ES-2. Phase One Antelope Creek Basin Implementation Plan
  • Table 1-1. Antelope Creek 2010 Water Quality Integrated Report
  • Table 2-1. Basin Plan Core Working Group
  • Table 2-2. Basin Plan Advisory Council
  • Table 2-3. Stakeholder Group Action Summary
  • Table 3-1. Watershed Soil Types
  • Table 3-2. Detailed Land-Use Summary
  • Table 3-3. Composite Land-Use Summary
  • Table 3-4. Summary of Dry Weather Flows
  • Table 4-1. TMDLs Completed for Nebraska Lakes (NDEQ 2010)
  • Table 4-2. TMDLs Completed for Nebraska Streams
  • Table 4-3. Summary of E. coli Data Providing Basis of Lower Platte Basin E. coli TMDLs
  • Table 5-1. Historic Water Quality Data at State Fairgrounds (2002-2008)
  • Table 5-2, NDEQ Samples Collected at State Fairgrounds in 2009
  • Table 5-3. In-stream Sampling Locations on Antelope Creek: E. coli Results
  • Table 5-4. In-stream Sampling Locations on Antelope Creek: Other Constituents
  • Table 5-5. Historic NDEQ Fecal Coliform Data at Antelope Creek near Children's Zoo
  • Table 5-6. Comparison of City of Lincoln Wet Weather Event Mean Concentrations (EMCs) to National Urban Runoff Program (NURP) Data Sets
  • Table 5-7. Historic Wet Weather Bacteria Data for City of Lincoln (1993)
  • Table 5-8. Sampling Dates
  • Table 5-9. In-stream Sampling Locations
  • Table 5-10. Tributary Sampling Locations
  • Table 5-11. Water Quality Sampling Parameters
  • Table 5-12. Antelope Creek Dry Weather Sample Results
  • Table 5-13. Antelope Creek Wet Weather Sample Results
  • Table 5-14. E. coli Summary Table (2010-2011)
  • Table 5-15. Geometric Mean Values Calculated for Locations with Weekly Sampling
  • Table 5-16. 2011 Summary of In-stream Sediment Samples for Antelope Creek
  • Table 5-17. Animals Observed During Sampling Events (2010-2011)
  • Table 6-1. Common Urban Runoff Pollutant Sources
  • Table 6-2. Typical Land Use Characteristics
  • Table 6-3. Summary of Major Sources of Flows and Pollutants
  • Table 6-4. Stormwater BMP Modeling Scenarios
  • Table 6-5. Relative Land Consumption of Stormwater Controls
  • Table 6-6. BMPs Ability to Retrofit and Land Requirements
  • Table 6-7. Groundwater Contamination Potential for Stormwater Pollutants Post-Treatment
  • Table 6-8. Primary, Secondary, and Incidental Treatment Processes Provided by BMPs
  • Table 6-9. Overview of Bacteria Control Measures and Expected Cost and Effectiveness
  • Table 7-1. Potential BMP Sites
  • Table 7-2. Potential BMP Site Selection Matrix
  • Table 7-3. Selected BMP Sites
  • Table 8-1. Non-structural Recommendations
  • Table 8-2. Proposed Structural Demonstration Projects
  • Table 8-3. Project Prioritization Ranking
  • Table 8-4. Annual Pollutant Load Reduction Estimates for AC-P01
  • Table 8-5. Annual Pollutant Load Reduction Estimates for AC-P02
  • Table 8-6. Annual Pollutant Load Reduction Estimates for AC-P03
  • Table 8-7. Annual Pollutant Load Reduction Estimates for AC-P04
  • Table 8-8. Annual Pollutant Load Reduction Estimates for AC-P05
  • Table 8-9. Annual Pollutant Load Reduction Estimates for AC-P06
  • Table 8-10. Annual Pollutant Load Reduction Estimates for AC-P07
  • Table 8-11. Annual Pollutant Load Reduction Estimates for AC-P08
  • Table 8-12. Annual Pollutant Load Reduction Estimates for AC-P09
  • Table 8-13. Annual Pollutant Load Reduction Estimates for AC-P10
  • Table 8-14. Annual Pollutant Load Reduction Estimates for AC-P11
  • Table 8-15. Annual Pollutant Load Reduction Estimates for AC-P12
  • Table 8-16. Annual Pollutant Load Reduction Estimates for AC-P13
  • Table 9-1. Existing Basin Growth Patterns (acres)
  • Table 9-2. Existing Basin Growth Patterns (percentage)
  • Table 9-3. Water Bodies with TMDL Determinations in Lincoln/Lancaster County
  • Table 10-1. Historic Recreation Season E. coli Geometric Means at AC-9
  • Table 10-2. Antelope Park Sub-basin Land Use Breakdown
  • Table 10-3. Antelope Park Sub-basin Water Quality Improvements
  • Table 10-4. Cost and Load Reduction Estimates
  • Table 10-5. Phase One Implementation Schedule and Milestones
  • Table 10-6. Basin Plan Total Cost Estimates
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Watershed Stormwater Master Plans