Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

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Identifying the Source Storm Events for Closures of the St. Lawrence Seaway Itay Rosenzweig IS in Water Resources Fall 2010 Image Courtesy of St. Lawrence Seaway System Directory 2009-10 - The Eisenhower Locks , Massena,

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Identifying the Source Storm Events for Closures of the St. Lawrence Seaway. Itay Rosenzweig GIS in Water Resources Fall 2010. Image Courtesy of St. Lawrence Seaway System Directory 2009-10 - The Eisenhower Locks , Massena, NY. Objectives. - PowerPoint PPT Presentation

Transcript of Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

Page 1: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

Identifying the Source Storm

Events for Closures of the St. Lawrence

SeawayItay Rosenzweig

GIS in Water ResourcesFall 2010

Image Courtesy of St. Lawrence Seaway System Directory 2009-10 - The Eisenhower Locks , Massena, NY

Page 2: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

Objectives

• Identify all in-season closures of the St. Lawrence Seaway since 2000

• Filter the closures caused by hydrologic conditions in the river for study

• Trace river peak flows to their Source Storm Events

• Identify patterns in storm events causing Seaway Closure

Page 3: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

The St. Lawrence Seaway• Opened in 1959• Combined tonnage

shipped through: 160 million metric tonnes

• 3,700 km long• 15 locks

Page 4: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

Lake Eire

Lake Ontario

Welland Canal Section8 locks42 km

St. Lawrence River Section8 locks42 km Montreal

Soo Locks

Page 5: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

HydroSHEDSHydrological data and maps based on

SHuttle Elevation Derivatives at multiple Scales

Data Available Through http://hydrosheds.cr.usgs.gov/ or from Add Data from ArcGIS Online…

http://hydrosheds.cr.usgs.gov/
Page 6: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

The St. Lawrence River WatershedDrainage Area: 1,050,000 sq.km

Page 7: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

North American Regional Reanalysis

• Historic “Reanalysis” model of climate conditions in North America

• Data from 1979 to present (through mid2009)• Precipitation, Atmospheric Pressure, Soil

Conditions, Groundwater flow, Air Temp, Surface Albedo

• Appx. 32km grid resolution• 3-hr temporal resolution

HUGE Thanks to Glenn Rutledge and Dan Swank at NOAA

Page 8: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

Closures of the Seaway since 2000Date of Closure Section Closed

08/12/2000 Welland Canal

08/21/2001 Welland Canal

09/15/2001 Welland Canal

09/08/2003 Soo Locks

09/12/2003 Welland Canal

08/30/2004 Welland Canal

10/03/2005 Welland Canal

09/22/2007 Welland Canal

08/04/2008 St. Lawrence River

08/18/2008 Welland Canal

09/19/2009 Welland Canal

Page 9: Identifying the Source Storm Events for Closures of the St. Lawrence Seaway

What’s Next?

• Use NARR to get rainfall data in the basin for the week preceding each closure

• Identify patterns in the storm events• Currently waiting on reply from St. Lawrence

Seaway Development Corporation – Objective Criteria for closing the Seaway?


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