PTMApp. Prioritize, Target, and Measure Application

Transcription

1 PTMApp Prioritize, Target, and Measure Application Presented by: Drew Kessler Houston Engineering Coauthors: Mark Deutschman Houston Engineering Chuck Fritz International Water Institute

2 Scale of Work and WRAPS Translation MPCA BWSR Local SWCD TMDL/WRAPS Prioritize Water Quality 1W1P Prioritize, Target, Measure Counties Cities Local Producers Implement & Continue Measuring

3 Scale of Work Iowa Nutrient Reduction Strategy IDALS WQI Local SWCD Counties Cities Local Producers Implement & Continue Measuring

4 Using technology for watershed planning across spatial scales? State Watershed & Regional Field

5 Why PTMApp? Why was PTMApp Developed MN Clean Water Accountability Act One Watershed, One plan

6 WHAT IS PTMApp? PTMApp COMPONENTS Create Products Using PTMApp DESKTOP Free for download and use ArcGIS Toolbar Based planning data included Creates products Includes example uses In Use Final Testing Internet Access of Product Using PTMApp WEB Targeted Implementation Strategy Grant Applications One Watershed One Plan Refine WRAPs

7 PTMApp EVOLUTION PROJECT TEAM Funding Clean Water Fund Minnesota Board of Water & Soil Resources Red River Watershed Management Board Project Team/Production International Water Institute Houston Engineering, Inc.

8 Prioritize, Target, and Measure WHAT IS PTMApp?

9 DESCRIBE: Watershed Condition EXAMPLE PRODUCTS AND USES

10 EXAMPLE PRODUCTS AND USES PRIORITIZE: Your Resource Concerns

11 EXAMPLE PRODUCTS AND USES PRIORITIZE: Sources Delivering Largest Downstream Loads

12 PRIORITIZE: Evaluate Practice Feasibility EXAMPLE PRODUCTS AND USES

13 TARGET: Estimated Practice WQ Benefits EXAMPLE PRODUCTS AND USES

14 WQ Benefits Treatment Process Storage Filtration Bio- Filtration Sedimentation Sedimentation Sedimentation & biological Infiltration Protection Source Reductio n Reduction in Mass Volume abstraction Leaving Landscape? Reduction of Mass Potential User Defined User selects method (from those to left) or enters percentage Form of Treated Particulate Particulate Particulate Dissolved Total (Dissolved & Particulate) Total (Dissolved & Particulate) Total (Dissolved & Particulate) Reduction Ratio Treatment Volume / Runoff Volume Delivered Velocity Design Standard / Velocity During Peak Discharge Velocity Design Standard / Velocity During Peak Discharge BMP Abstraction Volume / Volume Delivered Modified RUSLE Parameters Actual reduction in mass User selects method (from those to left) or enters percentage

15 Delivery Potential(D) Peak Discharge, ft./sec.. High Low R, % < 53% 53 75% 75 90% > 90 % WQ Benefits Reduction Ratio (R = T/D) Treatment Potential (T) Design Standard Velocity 0.05 ft./sec. 10yr 24hr Storm

16 Benefits Analysis WQ Benefits Reduction at BMP, % Treatment Decay Functions Reduction Ratio, % K=1 k=0.43 k=2.33 Q3 Q2 Q1 K=0.43 Q3 Q2 Q1 K=1 Q3 Q2 Q1 K=2.33 R = a * r K R = reduction at BMP, % a = maximum observed % reduction r = reduction ratio, % (runoff delivered / treatment capacity) K = weighted function of interquartile range =(Q3-Q2)/(Q2-Q1)

17 R, % Reduction Ratio < 53% 53 75% 75 90% > 90 % Benefits Analysis % Sediment Reduction WQ Benefits Sediment Reduction at BMP, % Treatment Decay Functions: Filtration Q Reduction, Ratio (R) Sediment Reduction, % <46% 47% - 60% 61% - 70% > 70%

18 Benefits Analysis WQ Benefits Reduction at BMP, % Treatment Decay Functions: Filter Strips Treatment Ratio Max Q1 Q2 Q3 Min Accounting for? Design Uncertainty Longevity/life span?

19 TARGET: Best Practice Locations (WQ Benefit Only) EXAMPLE PRODUCTS AND USES

20 TARGET: Best Practice Locations (WQ, Profitability, Willing Participation) EXAMPLE PRODUCTS AND USES Willing Landowner

21 MEASURE: Benefits of Targeted Implementation Plan EXAMPLE PRODUCTS AND USES

22 Treatment Trains

23 Treatment Trains

24 Treatment Trains BMP Locations Filtration Filtration Watershed Source Reduction

25 Treatment Trains

26 Treatment Trains

27 Some Final Thoughts No tool is perfect. Define the problem, use the right tool. PTMApp is for Water Quality Planning

28 Practical Ideas Climate Variation Altered Hydrology? Also LULC changes..

29 Practical Ideas 24 hour events Benefits Analysis Treatment Decay Functions: Filter Strips Reduction at BMP, % year inches year Max Q2 Min Reduction Ratio

30 Altered Hydrology Set Goals Measure progress Relate to Channel Stability 10 yr, 24 hr Qp < 74 cfs > 931 cfs

31 Historic vs. Modern Qp Practical Ideas Difference in 10 year, 24 hour Qp, cfs < 1 cfs > 100 cfs

32 Final Thoughts Limitations PTMApp Desktop Processing Times Spatial resolution of Land Use / Land Cover Data Needs more validation in range of landscapes Ignores existing practices unless entered Species of TN and TP Lacks near channel sediment No hydrological routing

33 Essentially, all models are wrong, but some are useful. - George E.P. Box Final Thoughts

34 More Information ptmapp.rrbdin.org