Hydrologic Issues for Dams - Association of State Dam Safety Officials

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ARLEN FELDMANChief, Hydrology and HydraulicsTechnology DivisionHydrologic Engineering Center609 Second StreetDavis, CA 95616530-756-1104arlen.d.feldman@usace.army.milED FIEGLEGeorgia Safe Dams Program4244 International Parkway Ste 110Atlanta, GA 30354404-362-2678ed_fiegle@mail.dnr.state.ga.usDES HARTFORDBC Hydro6911 Southpoint DriveBurnaby, BC, CanadaV3N 4XB604-528-2423des.hartford@bchydro.comSAM HUIBechtel Corporation328 Trestle Glen CourtWalnut Creek, CA 94598415-768-7734shui@bechtel.comBOB JARRETTUS Geological SurveyBox 25046, MS 412Denver, CO 80225303-236-6447rjarrett@usgs.govMATT LINDONUtah Dept of Natural Resources1594 W North Temple Street Suite 220PO Box 146300Salt Lake City, Utah 84114-6300801-538-7372mattlindon@utah.govGREG LOWETennessee Valley Authority400 West Summit Hill Dr., WT10BKnoxville, TN 37902865-632-6857gwlowe@tva.govJEFF McCLENATHANCorps of Engineers, Omaha District215 N 17 th StreetOmaha, NE 68102402-221-4578jeffrey.t.mcclenathan@nwo02.usace.army.milRORY NATHANSinclair Knight MerzPO Box 2500Malvern VIC AUS 3144+61 3 9248 3322rnathan@skm.com.auANAND PRAKASHURS CorporationOne Continental Towers1701 Golf Road, Suite 1000Rolling Meadows, IL 60008847-228-0707 x234anand_prakash@urscorp.comMEL SCHAEFERMGS Engineering Consultants, Inc.7326 Boston Harbor Road NEOlympia, WA 98506360-570-3450mgschaefer@thurstom.comLOU SCHREINERBureau of ReclamationLou Schreiner, D-8530PO Box 25007Denver, CO 80225-0007303-445-2546lschreiner@do.usbr.gov189Workshop Participants
JOE SKUPIENPrincipal Hydraulic EngineerSomerset County, New JerseyPO Box 3000Somerville, NJ 08876Phoneskupien@co.somerset.nj.usROBERT SWAINBureau of ReclamationRobert Swain, D-8530PO Box 25007Denver, CO 80225-0007303-445-2547rswain@do.usbr.govED TOMLINSONApplied Weather AssociatesPO Box 680Monument, CO 80132719-488-9117awa@divide.netMING TSENGHeadquarters, Corps of Engineers441 G Street NWWashington DC 20314-1000202-761-7177ming.tseng@hq02.u sace.army.milJERRY WEBBCorps of Engineers, Huntington DistrictWater Resources Engineering Branch502 Eighth StreetHuntington, WV 25701-2070304-529-5606jerry.w.webb@lrh01.usace.army.milGENE ZEIZELEngineering Sciences DivisionFederal Emergency ManagementAgency500 C Street S.W.Washington, D.C. 20472202-646-2802g ene.zeizel@fema.govWorkshop Participants 190
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The National DamSafety ProgramResea
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collaboration and expertise, and th
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TABLE OF CONTENTSPage #FOREWORD....
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NEW DEVELOPMENTS AND NEEDS IN SITE-
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FOREWORDThe Federal Emergency Manag
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The PMF represents an estimated upp
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RESEARCH AREASResearch needs were b
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Lack of Historical Data for Extreme
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should be developed that will allow
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• Storms used in HMR 55A and in t
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last 20,000 year s in submitting th
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d. USBR Guidelines Publication, Dam
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was severe. There was a potential,
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Thirdly, we must develop better way
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For most projects, the first step f
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Instead of lumping the loss rates t
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adjust the rating curve for when th
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In response to this situation, TVA
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TVA established a Regional Resource
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The Utah Hydrological ExperienceByM
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The Utah Hydrological ExperienceByM
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Late SpringRain on snow eventModel
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State of GeorgiaFEMA Workshop on Hy
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a. HEC1• DOS based program - glit
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Long te rm hydrologic needs include
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Current State and County PracticesA
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present standards and, as such, are
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Research Needs in Dam Safety Analys
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Looking at the four test cases give
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Hydrologic Analyses Related to Dam
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(iii) Modified Expected Cost Approa
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Parameter Estimation Based on Joint
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estimation of lag times and loss ra
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Hydrology for Dam Safety - Private
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Probable Maximum PrecipitationAll o
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The most common synthetic methods a
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the standard would be very conserva
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65Paper 12 - Cecilio
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REFERENCES1. U. S. Army Corps of En
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Overview of Flood Estimation Proced
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Extreme FloodsExtreme floods, the t
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Temporal patterns used to distribut
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Preliminary Estimates of Rainfall a
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24 to 72 hours). CRC Research Repor
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CURRENT AND FUTURE HYDROLOGIC RESEA
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ecause existing procedures are inad
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REGULATORY INVOLVEMENT AND COMMUNIC
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Decision BasisThe third feature of
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However, should it be revealed that
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supporting sub-processes. Therefore
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Probability ofFailure P f1Probabili
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Since any rigorous analysis is an i
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well, and usually do include subjec
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Against this background, there is n
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Howson, Colin., and Peter. Urbach.
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Procedures and Analysis Technologie
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Currently transposition limits for
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pro cedures are used to allow the h
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Use of Atmospheric Models in Rainfa
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mountain watersheds in response to
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18. Schaefer MG, Stochastic Modelin
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dams which could be used to save li
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Hydrodynamic modelMIKE 21 BACKGROUN
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A FRAMEWORK FOR CHARACTERIZATION OF
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c) Decision Level Risk Assessment:
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credible estimates of extreme flood
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Fitting a distribution to data sets
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unoff volumes. Examples of this typ
Page 141 and 142: used to estimate frequency distribu
Page 143 and 144: Hosking, J.R.M., and J.R. Wallis, 1
Page 145 and 146: in west central Arizona. The draina
Page 147 and 148: Trial and error reservoir routings
Page 149 and 150: Figure 1 Alamo DamAlamo Dam and Spi
Page 151 and 152: Paper 19 - Chieh and Evelyn 146
Page 153 and 154: esources are made to mitigate flood
Page 155 and 156: implementing a risk-assessment meth
Page 157 and 158: Typically, the elevation of the top
Page 159 and 160: similar to that of the high-gradien
Page 161 and 162: and provides a cost-effective frame
Page 163 and 164: 10000E. Colorado
Page 165 and 166: 10000x Peak Discharge95% confidence
Page 167 and 168: An integrated science approach will
Page 169 and 170: ReferencesBaker, V.R., Kochel, R.C.
Page 171 and 172: Partnerships, Proceeding of the 200
Page 173 and 174: Flood HydrographThe flood hydrograp
Page 175 and 176: A variety of data including informa
Page 177 and 178: Improved Flood Frequency Extrapolat
Page 179 and 180: RESEARCH NEEDS SUMMARYJerry Webb, H
Page 181 and 182: o Unsteady flow computer models for
Page 183 and 184: • Upd ate “Generalized Snowmelt
Page 185 and 186: DISCUSSION1. Genera l - After the p
Page 187 and 188: participant was asked to pick what
Page 189 and 190: RISK ANALYSIS100Relative Comparison
Page 191: WORKSHOPONHYDROLGIC RESEARCH NEEDSF
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Hydrologic Issues for Dams - Association of State Dam Safety Officials

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