IOOS in the Great Lakes: Supporting Management of Drinking Water Quality Kelli Paige GLOS Program Coordinator

Lake St Clair St Clair River Detroit River Goal Reduce health risks and costs associated with pollutant spills in the Lake Huron to Lake Erie Corridor Desired Outcomes Timely response to spill events by water intake plant operators Timely response to spill events by water intake plant operators More efficient and effective spill response / search and rescue More efficient and effective spill response / search and rescue Protection of human health Protection of human health Major Elements Link 2d model for corridor to NOAA Great Lakes Forecasting System Link 2d model for corridor to NOAA Great Lakes Forecasting System Generate 3d public domain model Generate 3d public domain model Use 3d model to support water intake risk assessment work Use 3d model to support water intake risk assessment work

 Predict currents, water-level for Lake St. Clair, St. Clair River, and Detroit River  Nowcasts every 3 hours, Forecasts every 12 hours  48 hour forecast HECWFS

data.glos.us/hecwfs

Management Uses Feedback: How can this aid in spill response and planning? Next Steps: - Calibrated model to spill observations 3 dye releases in St. Clair River - Generated a spill reference library Based on different spill scenario simulations Simplified spill information for planning response - Metro Beach/Clinton River forecasting Aid in Metro Beach quality forecast Increased resolution near Metro Beach

Spill location # 5 Impact Location Leading Edge time Dist (km) Max Conc. Time max Conc. Trailing edge time Trailing edge < 10% Cmax Trailing edge < 1% Cmax W. edge Max loc. E. edge 10 hr 35 min hr 05 min0 hr 20 min0 hr 15 min0 hr 20 min hr 05 min hr 05 min0 hr 35 min0 hr 30 min0 hr 35 min hr 15 min hr 05 min0 hr 40 min0 hr 30 min0 hr 40 min hr 35 min hr 35 min4 hr 00 min1 hr 15 min1 hr 45 min St. Clair water intake 4 hr 05 min hr 30 min4 hr 15 min1 hr 20 min2 hr 20 min hr 05 min hr 35 min4 hr 25 min1 hr 30 min2 hr 05 min hr 10 min hr 45 min4 hr 35 min1 hr 40 min2 hr 25 min hr 15 min hr 00 min6 hr 30 min4 hr 30 min5 hr 45 min Spill Reference Table SAMPLE ONLY

Additional Applications Issues & Modeling needs Navigation needs (water levels, currents Search and Rescue Recreational boaters (>150,000) Petrochemical spills Drinking water safety Swimming beaches, water quality Habitat restoration projects ‘hotspot’ for invasive species Capabilities Real-time and forecasted currents and water levels throughout the HEC Output via web-interface or raw-data Validated results for currents and water-levels Spill information (scenario or forecast) –Travel time, duration, concentration River plume tracking & nearshore predictions

Questions? Kelli Paige: Eric Anderson: