FLOOD OF NOVEMBER 26-27, 1979, IN ESSEX COUNTY, NEW

2y ago
112 Views
3 Downloads
1.37 MB
14 Pages
Last View : 13d ago
Last Download : 2m ago
Upload by : Luis Waller
Transcription

FLOOD OF NOVEMBER 26-27, 1979, IN ESSEX COUNTY, NEW YORKby Thomas J. Zembrzuski, Jr.U.S. GEOLOGICAL SURVEYOpen-File Report 80-1024Prepared in cooperation with theNEW YORK STATE DEPARTMENT OF TRANSPORTATIONAlbany, New York1981

JAMESWATTGEOLOGICAL SURVEYG. Frederick,For additional information write to:u.s.P.o.SurveyBoxAlbany, New York 12201(518) 472-3107iiDirector

Conversion factors and abbreviationsAbstractIntroductioniv1144447Summary . . .References Cited .Table 1.2.3.Figure 1.910Summary of floodflood ofin northeastern New York during1979 .Recurrence interval ofduring flood of November0 of selected streams1979, Elizabethtown, N.Y Rainfall-frequency relationships for storms of 3- and6-hour duration, Essex County, N.y . . . Map showing majorand the East4.92Photographs showing washout of New York State Highway 9Nalong The Branch near Elizabethtown, N.Y.Novet)lber 26-27, 1979 .3.7features of Bouquet RiverRiver basins,N.y 2.5* ······ . .Map showing locations of gaging stations and precipitationgages in northeastern New York.36Flood-frequency curve for station 04276215 The Branch nearElizabethtown, N.Y . . .iii8

CONVERSION FACTORS AND ABBREVIATIONSThe following factors may be used to convert units of measurementused in this report to the International System (SI) of metric units.Inch Pound Unitsinch (in)foot (ft)mile (mi)square mile (mi2)cubic foot per second(ft3/s)To obtain SI units25.40.30481.6092.5900.02832ivmillimeter (mm)meterkilometer (km)kilometer (km2)cubic meter per second(m3/s)

1Thomas JZembrzuski, JrOnhighwaywest 0.01).On theof November 26, 1979,ofstreams inresulted in five deaths and millions of dollars' worth in damage, and private, 1979The fatalitiesoccurred on The Branch aRiver at a washout of NewYork State9N about 2 milesElizabethtownThe stormindicate that its heaviestwasthet and East Branch Ausable Rivers. At the gaging station on East Branch Ausable River at Au Sable Forkstation 04275000), theflood was theNew Year's Flood of 1949, and, at the crestgage onat New Russia), it was thein the gage'sThe severity was not evident from thegage data. A totalof 2.73 inches (0.96 inches on November 25 and 1.77 inches on November 26) wasmeasured at the National Weather Service (NWS)ion gagein Elizabethtown, but a survey madeNWS after the storm indicates thatrainfall totals could have exceeded 5 inches in the mountains south and westof Elizabethtown.Figure 1 shows location of major streams and highways in the area;figure 2 shows the collapsed part of Highway 9N.1

INDEX MAPBase from N.Y.S. Department of Transportation, 1980NORTH SHEET, 1:250,000Figu:rae 1 .,--Majo-ra geog-raaphie!TheBmn hbasins,2

FiguPe 2 .--Washout of New YoPk Statenea·ra Elizabethtown, N.Y . ,view fpom highway , lookingbank, looking west.3BrunchTop ,PiveP

of aNew York StateAsTransportation toNew York State thedata on this flood from both active and disconSurveytinuedstations in northeastern New York and made an indirectmeasurement to determineflow of The Branch 0 7 mile downstreamfrom the site of the washout on9N. Thisthe1979 flood in comparison to record floodsrecurrence interval of the peakof selected streams.Rainfall data for the November 26-27 storm werethe NationalWeather Service inN.Y. and theSciences Research Center,Albany, N.Y.FLOODwere in theAlthough the mostAusable River basins (water occurreddata collectednortheastern New York.stationspresented in table 1; location of thestations areshown in3.In addition to the compilations mentioned above, an indirect dischargemeasurement was made by themethodand Benson, 1967) onThe Branch 1.0 mi west of Elizabethtown and 0 7 mi downstream from the washouton Highway 9NThereach had fouranddischarge of 6,600 ft3fs.cross-sectional flow velocities in theslope-area reach ranged fromft/s to 14 2ofstreamflow-measurement site isThegenerally expressed in terms of recurrence interval or exceedance probability.the average time interval between actual(Recurrence interval is,Exceedance probability,occurrences of a flood of equal orthatflood of spethe reciprocal of recurrence interval,cified magnitude will be equaled or exceeded in any one year.)4

Table 1.--Summary ofdischarges in northeastern New York during[Station locationsof November 26-27

VERMONTFiguPe 3.--Loeationgages in6

Recurrencethat had thethan 2 yearsquencythestreamsgreaterbased on the freDunn (1979).at the site of theand Dunn (1979) forthe recurrenceAindirect measurementungaged rural streamsinterval of the Novemberof dischaPgesNovembeP 26-2? 19[Station locations are shown in01315500Hudson River at North Creek01319800West 50013,30021,050214,90034 2605East Branch Ausable River atAu Sable Forks15 20050Ausable River near Au Sable Forks18 000156,400)100River atWest Branch Ausable River nearLake PlacidThe Branch near Elizabethtown6009,300t River at Willsboro25their measured totalsLocation ofion gagesIt is difficult tofrom the November 25-26 1979 torm areestimate theof that stormrainfall gages havepregageElizabethtownat theSciencesResearch Center on Whiteface Mountain, about 20of Elizabethtown.The heaviest rain fell dura 3-hour,at about 1700 hourson November 26,which time 0*80 inch was recorded*7

RECURRENCE INTERVAL, N YEARS51025501005004000/Clz/8w 3000//en0:::wa.1-lli2000LLuco::: uzw 1000 (I900uen800Cl700600500L------------L------J----- ---- -- ------ 0.50.20.10.040.020.010.002EXCEEDANCE PROBABILITYFigu e4.--Flood-fpequency cu ve fo station 042?6215The BPanch nea Elizabethtown, N.Y.The National Weather Service observer in Elizabethtown measured 1 45inches between 1300 hours on November 6 and 0800 hours the nextAtNorth Creek, where thet storm total was recorded, the observer notedthat 1.52 inches fell on November 26 between 1300 and 1730 hours, and that anadditional 0.83 inches fell between 1730 and 1900 hours.NWS made an inspectionafter theto furtherdocument rainfall totals but achievedbecause the mountains surrounding the flooded areas areA container found1 mile south of Keene (had collected 5 inches of rainthestorm. Data from thenetwork do not corroborate theseverity of the floods on some of the streams. Rainfall-frequency relationships for storms of 3-hour and 6-hour duration (U.S. Weather Bureau, 1961)are given in table 3.8

headwaters ofthefrom UWeather 93.51003 23 8inBranch,9NmilesNew Russiaof record100 yearsTheat Au Sable Forkstern New York, resultedFloodwaters from Thewashout of StatelivesPeakoffrom the washout wasgage on theRiver attheinterval of bothisof the flood on East Branch Ausable River04275000) is 50 years.Rainfall data from thenetwork do not corroborate theof theon some of the streams.2.73 inches wasmeasuredthein Elizabethtown an unofficialfrom the mountainswest ofindicates that rainfall totals could have exceeded5 inches in some areas.9

Will, 1979, Flash flood hits area with death and destructionNews,N.Y ; Denton Publications, November 29 1979 issue,p 14-15.Dalrymple, Tate, andby theA., 1967, Measurement ofu.s.12 p.National Oceanic and Atmospheric Administration, 1980, Climatological Data forNew York: November 1979, 91, no. 11, 22 p.u.s.of the United States:Technical Paper 40, 115 p.Weather Bureau, 1961Weather Bureauu.s.Zembrzuski, T. J., and Dunn, Bernard, 1979, Techniques for estimatingmagnitude and frequency of floods on rural unregulated streams inNew York State excluding Long Island: U.S. Geological SurveyWater-Resources Investigations 79-83, 66 p.10

FLOOD OF NOVEMBER 26-27, 1979, IN ESSEX COUNTY, NEW YORK by Thomas J. Zembrzuski, Jr. U.S. GEOLOGICAL SURVEY Open-File Report 80-1024 Prepared in cooperation with the NEW YORK

Related Documents:

Financial Management of Flood Risk isbn 978-92-64-25767-2 21 2016 03 1 P Financial Management of Flood Risk Contents Chapter 1. Introduction: The prevalence of flood risk Chapter 2. Flood risk in a changing climate Chapter 3. Insuring flood risk Chapter 4. Improving the insurability of flood risk C

1) The HEC-RAS provides the flood profile for the worst flood intensity. This profile will facilitate to adopt appropriate flood disaster mitigation measures. 2) The flood profiles for different flood intensities with different return periods can be plotted at any given cross section of river. Also, such flood

each FRM Planning cycle will take. FRM Strategies will cover three of these cycles. Timeline of FRM Act Baseline appraisal of current flood risk Opportunities for Natural Flood Management Prioritisation of actions Consultation on FRM Strategies FRM Act 2009 National Flood Assessment Dec 2011 Flood hazard and flood risk maps FRM Strategies 2015 .

understand and predict. Nearly every community in Nebraska that faces flood risk has had a study conducted to predict the characteristics of a 1% annual chance flood (100-year flood). The Flood Insurance Study and the associated Flood Insurance Rate Map are the best sources of information. The data in these documents mixed with the

Canal interacts with the River Trent and flood gates are operated to manage the flood risk. The Canal and River Trust is responsible for managing flood risk from canals. Integrated flooding occurs when two or more flood sources interact. For example, when river levels are high, sew

Trent DG5) Groundwater Source Protection Zones Flood Zone 2 - 1 0yr F lodpain Flood Zone 3a - 100yr Floodplain Flood Zone 3b - Functional Floodplain D es ig nat d M R v r Areas that benefit from Flood Defences Historical Flooding Incidents Historical Flooding Incidents (as supplied by Parish Councils) Canal

Life Span The Flood Figure 2. A graph of the life span of the patriarchs. Compare the life spans before the flood with those after the flood. The life span average before the flood was 912 years, after the flood 222 years. various Biblical characters as mention

FLOOD CONTROL - DRAINAGE IMPROVEMENT . Applies for the following mitigation acticities: ACQUISTION, ELEVATION, DRY FLOOD PROOFING, DRAINAGE IMPROVEMENTS, FLOOD CONTROL MEASURES, FLOODPLAIN AND STREAM RESTORATION AND FLOOD DIVERSION. For assistance, contact the State of Florida . Urban Suburban Rural.