KINEROS (KINematic runoff and EROSion model) Michael Schaffner Senior Service Hydrologist NOAA National Weather Service WFO Binghamton, NY Eastern Region Flash Flood Conference June 4, 2010 National Weather Service (NWS) forecasting for small fast responding basins • Forecasting for large basins (i.e. mainstem rivers) has been taking place for decades. • Forecasting for small basins is more recent and is techniques are still being developed. What are current NWS methods of providing site specific/basin specific information in flash flood warnings? • Flash Flood Monitoring and Prediction Program (FFMP) • Site Specific rainfall-runoff models • Headwater Guidance • Flash Flood Guidance FFMP vs. Site Specific Model • This allows the forecaster to pinpoint (i.e. provide site specific information) which basins are receiving the heaviest rainfall. • Does not allow the forecaster in most cases to determine the timing and magnitude of an event. Available Site Specific Models • Antecedent Precipitation Index (API) model • One-hour time steps • Hourly Multi Sensor Precipitation Estimator (MPE) input • Manual hourly Quantitative Precipitation Forecast (QPF) input Output from the Site Specific Model The KINEROS Model: A next generation site specific model • Is a distributed model. • Current modeling within the NWS is generally lumped modeling. Lumped models consider the watershed as a whole. • Distributed models take into account spatial variation in: – – – – Drainage/channel network Precipitation Land use Soil type Schematic View Plan View Composed of a cascade of overland flow planes and open channel elements. Above image from: http://www.tucson.ars.ag.gov/kineros/ Starting up the model • Select initial flow rate • Select initial soil moisture state (very dry, dry, wet, or very wet) • Select date and time of simulation start • Select Z-R Relationship KINEROS Graphical User Interface (GUI) Test Basins Both gauged and ungaged watersheds were tested. 4 gauged and 3 ungauged KINEROS modeled points in the upper Delaware River Basin are shown. Drainage area from 4 square miles to 241 square miles. Platte Kill near Dunraven, NY • 35 square miles. • Typical fast responding small stream of the Catskill Mountains of New York State. Typical Platte Kill Hydrographs produced by KINEROS Platte Kill near Dunraven Platte Kill near Dunraven 700 800 500 400 Gage 300 Simulation 200 100 0 8/28/2006 19:12 8/29/2006 00:00 8/29/2006 04:48 8/29/2006 09:36 Date and Time 8/29/2006 14:24 8/29/2006 19:12 Discharge (cfs) Discharge (cfs) 600 700 600 500 Gage 400 Simulation 300 200 100 0 3/7/2 3/7/2 3/7/2 3/7/2 3/8/2 3/8/2 3/8/2 3/8/2 3/8/2 3/8/2 3/8/2 008 008 008 008 008 008 008 008 008 008 008 14:24 16:48 19:12 21:36 00:00 02:24 04:48 07:12 09:36 12:00 14:24 8/30/2006 00:00 Date and Time Platte Kill near Dunraven Platte Kill near Dunraven 1600 1200 1400 1000 1200 1000 800 600 400 200 0 6/26/20 6/26/20 6/26/20 6/26/20 6/26/20 6/26/20 6/26/20 06 06 06 06 06 06 06 07:12 09:36 12:00 14:24 16:48 19:12 21:36 Date and Time Gage Simulation Discharge (cfs) Discharge (cfs) 1800 800 Gage 600 Simulation 400 200 0 3/8/2008 3/8/2008 3/8/2008 3/8/2008 3/8/2008 3/9/2008 3/9/2008 3/9/2008 12:00 14:24 16:48 19:12 21:36 00:00 02:24 04:48 Date and Time Beaver Kill near Cooks Falls, NY • 241 square miles. • One of our most challenging river forecast points due to its fast response time. Lead Time: Beaver Kill near Cook Falls, NY 241 square mile fast responding headwater point. KINEROS can provide lead time of almost 3 hours on the flood crest vs. minimal lead time when compared to the typical flood warning issued. Further lead time is possible when QPF is added. USGS web cam image: http://ny.water.usgs.gov/rt/pub/01420500.htm Ungaged Basins • Represent an unmet need in forecasting within the NWS. • Data can be collected on small basins using indirect discharge methods. • Timing of onset of flooding and peak flooding can be noted. Callicoon Creek at Jeffersonville, NY USGS stream gage located downstream from Jeffersonville at Callicoon. May not be representative of flooding further upstream along the East Branch at Jeffersonville. Callicoon Creek at Jeffersonville Watershed in KINEROS Event Date Description June 28, 2006 Record flood July 29, 2009 Minor-Moderate July 31, 2009 Minor-Moderate August 2, 2009 ¼ Bankfull August 9, 2009 ½ Bankfull August 22, 2009 ½ Bankfull Summary of Current use of KINEROS • Used for gaged and ungaged basins. • Peak flow forecasting for gaged basins including some headwater river forecast points. • Peak flow forecasting for ungaged basins under the limitation of categorical forecasting. Future Work • Add snow model. • Add sub-surface lateral flow. • Test at other NWS offices. Example WFO Pittsburgh urbanized basins: Questions / Comments?