Nashua River Flooding
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Nashua River Flooding

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Delineated the impervious surfaces within the study area such as rooftops, streets, parking lots, and driveways, which may contribute to the flooding. Field work was also done with a Trimble to show ...

Delineated the impervious surfaces within the study area such as rooftops, streets, parking lots, and driveways, which may contribute to the flooding. Field work was also done with a Trimble to show the difference in boundaries of a river at normal stage and at flood stage.

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Nashua River Flooding Nashua River Flooding Presentation Transcript

  • NASHUA RIVER FLOODING: CAUSALITY, HAZARDS, AND EVACUATION ROUTES Advanced GIS Spring 2011 Jonathan Beesen, Kaitlin Fantasia, Yukino Noda Inundated Wetland Swamp Lancaster, MA
  • Causes of flooding
    • Flooding is normally caused by natural weather events
    Nashua River
  • Causes of flooding
    • Poor maintenance
    • Development/ Planning Issues
    Flooded Trail in Lancaster, MA
  • Impervious surfaces and flooding
    • An impervious surface is a surface which cannot be penetrated by water
    • Natural environment is designed to absorb water, even in heavy storms
    • Increased percentages of impervious surfaces within a region leads to increased flooding
    Route 117 Bridge over Nashua River
  • Flooding in Lancaster, MA
    • Local residents say that spring flooding is fairly common in this area
    • Nashua River swells after heavy rainfall and snowmelt
    • Low lying areas along banks of river become inundated
    Lancaster, MA
  • Making of Impervious Surfaces and Shaded Relief Map Shaded Relief Major Hydrography Impervious Surfaces
  • Impervious Surfaces and Shaded Relief of Study Area IMPERVIOUS SURFACES AND SHADED RELIEF OF STUDY AREA WITHIN NORTHERN CLINTON AND SOUTHERN LANCASTER, MASSACHUSETTS Framingham State University, Framingham, Massachusetts Drafted By: Kaitlin Fantasia Date: May 5, 2011 Source: MassGIS http://www.mass.gov/mgis/ Proj: NAD83 SP FIPS 2001
  • Making of Shoreline Change Map USGS Color Ortho Imagery FEMA Q3 Flood Zones Collected Trimble Data from site
  • Trimble Data: Nashua River Shoreline Changes NASHUA RIVER SHORELINE CHANGES IN NORTHERN CLINTON AND SOUTHERN LANCASTER, MASSACHUSETTS Framingham State University, Framingham, Massachusetts Drafted By: Jonathan Beesen and Kaitlin Fantasia Date: May 5, 2011 Source: MassGIS http://www.mass.gov/mgis/ Proj: NAD83 SP FIPS 2001
  • FEMA Flood Zone Descriptions Orange Blue X500 Zone X (500-year) An area inundated by 500-year flooding; an area inundated by 100-year flooding with average depths of less than 1 foot or with drainage areas less than 1 square mile; or an area protected by levees from 100-year flooding. AE Zone AE An area inundated by 100-year flooding, for which BFEs have been determined.
  • List of Data layers File Type Name Last Modified Raster Data   Impervious Surface February 2007 Shaded Relief February 2005 USGS Color Ortho Imagery April 2005 Vector Data Polygon Community Boundaries (Towns) September 2009    Polygon FEMA Q3 Flood July 1997  Line/ Polygon Major Hydrography March 2010 Line Collected Trimble Data (Shorelines) May 2011 Point Collected Trimble Data (Trees) May 2011
  • Flooding in Lancaster, MA 2007
      • http://www.necn.com/03/08/11/Rain-stops-but-flooding-fears-continue/landing.html?blockID=435512&feedID=4215
  • INDEX MAP Hazard Sites in Flood Zones FLOODING HAZARD AREAS: TIER CLASSIFIED DEP 21E SITES Framingham State University, Framingham, Massachusetts Drafted By: Jonathan Beesen Date: May 5, 2011 Source: MassGIS http://www.mass.gov/mgis/ Proj: NAD83 SP FIPS 2001
  • Mass DEP 21E Site Classification
  • RTN Lookup Site for Reisner Corp.
      • http://db.state.ma.us/dep/cleanup/sites/Site_Info.asp?textfield_RTN=2-0016849
  • FLOOD EVACUATION MAP OF NORTHERN CLINTON AND SOUTHERN LANCASTER, MASSACHUSETTS Yukino Noda
  • http://www.wickedlocal.com/clinton/news/x1664759047/Rains-bring-flooding-to-Clinton-and-Lancaster?img=4#axzz1LK0ojHAZ Clinton March, 2010
  • Northern Clinton and southern Lancaster (9.4 square miles) Schools Study Area
  • Impervious Land Surface Image of the Study Area Potential Flooding Area
  • A B C D E F G H Zones Assigned to Each Evacuation Sites MassDOT Road
  • Potential Impassable Roads Potential Impassable Roads and Area Potentially Blocked by Impassable Roads Area Potentially Blocked by Impassable Roads Potential Flooding Area
  • Zones assigned to each evacuation site
    • Potential impassable roads
    • Area potentially blocked by impassable roads
    • Medical and town facilities
    • Potential hazardous area
    • Roads
    The Structure of the Map
    • Altitudes
    • Land surfaces
    Levels of Dangerous Area
    • Potential Flooding Area
    • Area Potentially Blocked by Impassable Roads
  • The List of Data layers File Type Name Last Modified Raster Data   Impervious Surface   February 2007     USGS Topographic Quadrangle Images June 2001  Vector Data Point Acute Care Hospitals   August 2009   Point Colleges and Universities   July 2007   Polygon Community Boundaries (Towns)   September 2009    Point Community Health Centers   August 2007   Polygon FEMA Q3 Flood   July 1997    Point Fire Stations   February 2007   Polygon Land Use (2005)   June 2009    Line Major Ponds and Major Streams   July 1998    Line Massachusetts Department of Transportation (MassDOT) Roads  October 2009   Point Police Stations   February 2007   Point Schools  November 2010   Point Town Halls   February 2007
  • Thank you for paying attention. Are there any questions or comments? Beaver Dam within wetland swamp