Appendix L. Vermont Stream Geomorphic Assessment. Flood History of Vermont Rivers. Vermont Agency of Natural Resources April, 2004

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1 Vermont Stream Geomorphic Assessment Appendix L Flood History of Vermont Rivers Vermont Agency of Natural Resources April, 24 April, 24 -L- Vermont Agency of Natural Resources

2 Flood History of Vermont Rivers Use the map of Vermont USGS river gage site to locate the gage nearest to the reach or site of interest. Then refer to the plots on the following pages to learn the history of floods during the period of record for each gage site. Reminders: Some gage sites are below dams that regulate flow which explains why large floods in these watershed did not result in a high flow recorded at the gage. Annual peak data used to generate these plots do not include more recent years. Annual Peak data from USGS and listed by that agency as provisional. Recurrence interval data taken from USGS (22). Visit the USGS web page (listed at the end of this Appendix) for more information about the data used in this aapendix. April, 24 -L1- Vermont Agency of Natural Resources

3 East Branch Passumpsic Near East Haven Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Moose River at Victory, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Pope Brook Near Danville, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L2- Vermont Agency of Natural Resources

4 East Orange Branch at East Orange, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Ompompanoosuc River at Unioun Village, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Ayers Brook at Randolph, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L3- Vermont Agency of Natural Resources

5 Sleepers River near St. Johnsbury, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Passumpsic River at Passumpsic, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Wells River at Wells River, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L4- Vermont Agency of Natural Resources

6 White River at West Hartford, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Ottauquechee River near West Bridgewater, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Ottauquechee River at North Hartland, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L5- Vermont Agency of Natural Resources

7 Black River at North Springfield, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Williams River near Rockingham, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge West River at Jamaica, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L6- Vermont Agency of Natural Resources

8 Walloomsac River near North Bennington, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Mettawee River near Pawlet, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Otter Creek at Center Rutland, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L7- Vermont Agency of Natural Resources

9 Otter Creek at Middlebury, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge New Haven River at Brooksville near Middlebury, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Little Otter Creek at Ferrisburg, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L8- Vermont Agency of Natural Resources

10 Lewis Creek at North Ferrisburg, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Laplatte River at Shelburne Falls, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Winooski River at Montpellier, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L9- Vermont Agency of Natural Resources

11 Dog River at Northfield Falls, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Mad River near Moretown, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Lamoille River at Johnson, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L1- Vermont Agency of Natural Resources

12 Lamoille River at East Georgia Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Stone Bridge Brook near Georgia Plains, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Missisquoi River near Troy, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L11- Vermont Agency of Natural Resources

13 Missisquoi River near East Berkshire, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge Missisquoi River at Swanton Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge 199 Black River at Coventry, VT Annual Peaks 1 yr Discharge 25 yr Discharge 5 yr Discharge April, 24 -L12- Vermont Agency of Natural Resources

14 Web page links to Vermont Hydrology Data Use the following web sites to obtain other facts and data related to the hydrology of Vermont rivers and streams: Vermont River Gages Interactive Climate Map for the State of Vermont Flow Frequency Characteristics of Vermont Streams April, 24 -L13- Vermont Agency of Natural Resources