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Data Series 763

Prepared in cooperation with the Federal Emergency Management Agency

High-Water Marks From Flooding in Lake Champlain from April through June 2011 and Tropical Storm Irene in August 2011 in Vermont

By Laura Medalie and S.A. Olson

Thumbnail of and link to report PDF (10.4 MB)Abstract

The U.S. Geological Survey, in cooperation with the Federal Emergency Management Agency, identified high-water marks after two floods in Vermont during 2011. Following a snowy winter, new monthly precipitation records were set in Burlington, Vermont, in April and May 2011, causing extensive flooding from April through June. The spring 2011 flooding resulted in a new record for stage (103.27 feet, referenced to the National Geodetic Vertical Datum of 1929) at the Lake Champlain at Burlington, Vt., gaging station (04294500). During August 28 and 29, 2011, tropical storm Irene delivered rainfall totals of 3 to more than 7 inches throughout Vermont, which resulted in extensive flooding and new streamflow records at nine streamgaging stations. Four presidential declarations of disaster were made following the 2011 flood events in Vermont.

Thirty-nine high-water marks were identified and flagged to mark the highest levels of Lake Champlain from the May 2011 flooding, and 1,138 high-water marks were identified and flagged along Vermont rivers after flooding from tropical storm Irene in August 2011. Seventy-four percent of the high-water marks that were flagged were later found and surveyed to the North American Vertical Datum of 1988.

First posted May 2, 2013

  • Appendix 1 PDF (999 KB)
    Report prepared by Dewberry to document the Vermont high-water mark survey, September 19, 2012.
  • Appendix 2 XLS (619 KB) PDF (287 KB)
    Elevations of high-water marks from flooding in Lake Champlain from April through June 2011 and tropical storm Irene, August 28–29, 2011, in Vermont.
  • Appendix 3 KMZ-Google Earth (2 KB)
    Map of high-water marks from flooding in Lake Champlain from April through June 2011 and tropical storm Irene, August 28–29, 2011, in Vermont.

For additional information contact:
Office Chief
U.S. Geological Survey
New England Water Science Center
New Hampshire-Vermont Office
331 Commerce Way, Suite 2
Pembroke, NH 03275
(603)226-7800
http://nh.water.usgs.gov

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Suggested citation:

Medalie, Laura, and Olson, S.A., 2013, High-water marks from flooding in Lake Champlain from April through June 2011 and Tropical Storm Irene in August 2011 in Vermont: U.S. Geological Survey Data Series 763, 11 p., https://pubs.usgs.gov/ds/763/



Contents

Abstract

Introduction

Methods

Summary

References Cited

Appendix 1. Report prepared by Dewberry to document the Vermont high-water mark survey, September 19, 2012

Appendix 2. Elevations of high-water marks from flooding in Lake Champlain from April through June 2011 and tropical storm Irene, August 28–29, 2011, in Vermont

Appendix 3. Map of high-water marks from flooding in Lake Champlain from April through June 2011 and tropical storm Irene, August 28–29, 2011, in Vermont

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