1. RiverSpill: A Real-Time Emergency Response and Planning Tool William B. Samuels 1, Rakesh Bahadur 1, Jonathan Pickus 1, David Amstutz 1 and Kevin McCormack 2 1 Science Applications International Corporation, McLean, VA 2 US Environmental Protection Agency, Washington, DC

2. RiverSpill Capabilities Downstream Tracing Operational for the Continental US Instantaneous and Continuous Release Chemical and Biological Agents Flow: Automated, User Selected, User Defined Inclusion of Temperature in Biological Calculations Enhanced User Control and Reporting Additional Databases  Water Treatment Plants, Sewage Treatment Plants, Dams, RMP Locations, Railroads, HUCs Display of Hydrologic Units Find River Query

3. RiverSpill Capabilities (continued) Upstream Tracing Operational for the Continental US Trace by Time or Distance Time Tracing Based on Mean or User Defined Flow Enhanced Reporting  Feature Inventory  Query Individual Facilities Additional Databases  Water Treatment Plants, Sewage Treatment Plants, Dams, RMP Locations, Railroads, HUCs Display of Hydrologic Units Find River Query

4. Release Type Data Processing Scenario Selection Flow Calculations Water Quality Calculations Output Display Prepare Data, USGS Gages, & Reach Data Set Origin Point Real Time Gage t (Auto Detected) Real Time Gage (User selected) Flow Parameters from Reach File (Can be over-written by User) Calculate Velocity Factor Calculate Real Time Flow, velocity, depth, area, and time of travel Get flow, stage, temperature Solve Dispersion-decay equation for Release Type Instantaneous Release Continuous Release Peak Concentration Peak Concentration Non-Peak Concentration Non-Peak Concentration Tabular Display Graphical Display Tabular Display Graphical Display Tabular Display Calculate flow path using Network Analyst (Time and Length) Is PWS Present? STOP Mass Agent Name Decay Rate Level of Concern NO YES Solution Type Solution Type Mass, Counts/mass Agent Name Decay Rate Level of Concern Agent Type CHEMICALCHEMICAL INSTANTANEOUS BIOLOGICAL CONTINOUS CHEMICALCHEMICAL BIOLOGICAL Agent Type Concentration Agent Name Decay Rate Level of Concern Concentration Counts/mass Agent Name Decay Rate Level of Concern

5. Downstream Tracing Spill Site

6. Upstream Tracing Origin

7. National Hydrography Dataset (NHD) Pilot Project Investigate the feasibility of integrating the NHD into RiverSpill

8. NHD for 3 Hydrologic Units

9. Reach File NHD

14. ERF1 (1 segment) Mean Flow = 506.72 cfs Mean Velocity = 1.54 fps NHD (55 segments) Mean Flow = 392 cfs (range: 324 - 443) Mean Velocity =1.2 fps (range: 1.15 - 1.23) USGS Real-Time gages Olentangy River at Delaware, OH (upstream gage) Mean Flow = 306 cfs Olentangy River at Worthington, OH (downstream gage) Mean flow = 371 cfs

15. Approaching Ground Truth

16. Upstream Tracing Using NHD