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COMPARING DSS-WISE- LITE TO OTHER DAM BREACH SOFTWARE

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COMPARING

DSS-WISE-LITE TO OTHER DAM

BREACH SOFTWARE

National Dam Safety Program Technical Seminar No. 22 Dam Breach Modeling and Consequence Assessment

National Emergency Training Center February 18-19, 2015 – Emmitsburg, MD

Brian Shane Cook, PE, LSIT

formerly – Engineering Supervisor – KY Division of Water - Dam Safety currently – Assistant Dam Safety Engineer - North Carolina - Land Quality

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 Project Background

 History

 Purpose of Study

 Key Considerations

 Criteria for Comparison

 Testing the FEMA

 and DHS/USACE toolboxes

 GeoDam-BREACH

 DSAT (DSS-WISE-Lite)

 Results & Conclusions

 Final Results of Study

 Lessons Learned

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The history, purpose, key considerations, and criteria for comparison of our project

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 FEMA Hazard Mitigation Grant  Rapid Inundation Mapping

 180 models using Geo-Dam-BREACH

 Enhanced Inundation Mapping

 7 models using HEC-RAS 1D

 2 models using FLO-2D

 Questionable Inundation Results:

 Low Head dams

 Dams in areas of flat topography

 Dams that are small in size

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 FEMA’s development of GeoDam-Breach

 DHS and USACE’s development of DSAT (DSS-WISE-Lite)

 Questions about models and their intended use  Which models should be used in what situations?

 Pilot study

 Compare several software packages

 Some you may have used  BOSS DAMBRK (1-D)

 HEC-RAS 4.1 (1-D, unsteady-state)

 FLO-2D (2-D)

 … and some that are newly released/being released  GeoDamBreach (1-D)

 DSS-WISE-Lite (2-D)

 HEC-RAS 4.2 Alpha (1-D unsteady-state)

 HEC-RAS 5.0 Beta (2-D unsteady-state)

 Help to inform dam safety community as to key issues/considerations in selection of models

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In assessing dam breach software, what

questions are we trying to answer?

How much time/money is involved?

Is the accuracy of the model acceptable?

Can the software produce the end products I

need?

Which models can be used to produce an

Emergency Action Plan?

Which models are appropriate for hazard

classification?

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 Investment

 Software licensing fees

 DSS-WISE-Lite is free

 Time to setup and run model

 DSS-WISE-Lite can be setup in and ran in minutes

 Accuracy

 Compare results

 Water Surface Elevation or Depth of flooding

 Inundation area or boundary

 Arrival times

 Model Limitations

 End products

 Output data

 DSS-WISE-Lite shape files are available to download in minutes to a few hours

 Additional shape files can be uploaded into DSS-WISE-Lite

 Supplementary tools

 DSAT provides additional tools such as population at risk from LandScan dataset, view critical infrastructure, economic consequence assessment model, etc.

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GeoDam-BREACH and DSS-WISE-Lite

TESTING THE FEMA AND

DHS/USACE TOOLBOXES

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DSAT (DSS-WISE)

 DSS-WISE = “The Decision Support

System for Water Infrastructural Security”

 Funded by DHS and USACE,

developed by the NCCHE at Ole Miss

 Web-based platform, DSS-WISE-Lite operates within DSAT (Dams Sector Analysis Tool) Viewer

 Uses 2-d computational engine (CCHE2D-FLOOD)

 Input:

 Automatically pulls data from National Inventory of Dams based on ID of dam or user input

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 Input:

 Types of dam failures

 Total and Sudden dam failure

 Partial dam failure

 Types of Partial Dam Failures

 Embankment (overtopping or piping)

 Concrete

 Spillway Gate failure

 Typical breach parameters are provided (based on type of failure)

 User can input breach parameters

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Output:

Output data files are downloaded from Server

Shape file of depths of flooding

Shape file of total extent of flooding

Shape file of arrival times of flooding

Summary report

Shape files can be opened in DSAT or

imported into ArcGIS, GeoDam-BREACH, etc.

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Assessing Accuracy

and Lessons Learned

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KY 0043 – BEECH CREEK DAM

67 feet tall 400 feet wide Area at Normal Pool – 36.3 acres Volume at Normal Pool– 935.5 ac-ft Area at Crest– 46.5 acres Volume at Crest – 1600 ac-ft

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KY 0043 BEECH CREEK DAM COMPARISON: HEC-RAS 1D, HEC-RAS 2D, & DSS-WISE Legend HEC-RAS 1D DSS-WISE HEC-RAS 2D Value High : 27.04 Low : 0

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KY 0103 – WILLISBURG LAKE DAM

77 feet tall 820 feet wide Area at Normal Pool – 126.1 acres Volume at Normal Pool– 2351.5 ac-ft Area at Crest– 244.2 acres Volume at Crest – 7591.1 ac-ft

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GAME FARM KY 0372 COMPARISON: DSS-WISE, GEO-DAM-BREACH SMPDBK, FLO-2D

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KY 0155 - CAMPBELLSVILLE RESERVOIR DAM

49 feet tall 1070 feet wide Area at Normal Pool – 63 acres Volume at Normal Pool– 950 ac-ft Area at Crest– 84 acres Volume at Crest – 1300 ac-ft

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 Low-head “run of river” dam

 Simulated in:

 SMPDBK

 DSS-WISE-Lite

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WHITESBURG KY 0075 COMPARISON: GEO-DAM-BREACH SMPDBK AND DSS-WISE-LITE

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 Lake s p ills o u t o n to ve r y f l a t to p o g r a p hy ( O h i o R i ve r f l o o d p la in )  O r i g i n al l y a t te m p te d i n B O S S - DA M B R K  R a n u s i n g G e o d a m -B R E AC H  D e t a i l e d m o d e l d o n e i n F LO - 2 D  R a n u s i n g D S S - W I S E - L i te

KY 0012 - SCENIC LAKE

Insert Topography overlayed on aerial photography here to illustrate flat-nature of floodplain

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SCENIC LAKE KY 0012 COMPARISON: DSS-WISE-LITE, GEO-DAM-BREACH SMPDBK, FLO-2D

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KY 0307 – BIG BONE LICK STATE PARK DAM

65 feet tall 750 feet wide Area at Normal Pool – 8.9 acres Volume at Normal Pool– 185 ac-ft Area at Crest– 10.32 acres Volume at Crest – 213 ac-ft

(27)

KY 1003 – SOUTH FORK BEARGRASS CREEK DAM

56 feet tall 560 feet wide Area at Normal Pool – 40 acres Volume at Normal Pool– 605 ac-ft Area at Crest– 76 acres Volume at Crest – 1462 ac-ft

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KY 0040 – GUIST CREEK DAM

60 feet tall 1010 feet wide Area at Normal Pool – 317 acres Volume at Normal Pool– 4832.5 ac-ft Area at Crest– ? acres Volume at Crest – 15,405.1 ac-ft

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 Model limitations

 DSS-WISE-Lite – Terrain data is limited to National Elevation Dataset

 Breach width limited to minimum of 66 feet can effect results

 NID data needs to be verified when running models (don’t rely on accuracy of data because it may have been entered wrong

originally when inputted into the NID or corrupt databases could have been used when uploading data into the NID)

 Transferring data from one model to another (interoperability)

 Import of hydrographs not currently available in DSS-WISE-Lite

 Hard to make comparisons if input data can’t be compared

 Export of cross section, WSEL, and/or depth grid data

 DSS-WISE-Lite is limited to shape files of output  Creation of end products

 EAP are currently unavailable

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 Top 3 parameters for differences in models

 Breach Parameters

 Opinion of inputs varies by user

 Hydrograph

 Physical model output

 HEC-HMS output

 HEC-RAS inline structure output

 DSS-WISE-Lite doesn’t allow for the input of a breach hydrograph

 Terrain data

 10 meter to 3 meter DEM from National Elevation Dataset (depends on location in the US)

 5 feet LIDAR (Kentucky GIS dataset) was used in modeling project

 Or other terrain data that you may have access to

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 Volume of Reservoir

 If the actual volume differs from the volume calculated from the terrain data then the model may not run and an error message will be sent to you by email from DSS-WISE-Lite during the error check validation

 Elevations

 If known elevations vary from the terrain data then the model may not run and an error message will be sent to you by email from DSS-WISE-Lite during the error check validation

 GIS can be a helpful tool to look at terrain data to verify elevations and volumes but not readily accessible by all users.

 Bridges

 If the bridges are in the National Bridge Inventory or you know the

location and size, then they can be removed when running DSS-WISE-Lite but there will be some differences in the output of the model since rating curves of bridges are not inputted into model

 In the instances where there are culverts or bridges at road crossings that are not removed when running DSS-WISE-Lite, the model could show a backwater effect

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 If I were cutting trim for my house, which is the “right” tool ?

THE RIGHT TOOL FOR THE JOB?

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- User can specify a breach width of 33 feet

- User can import breach hydrograph

- User can develop an Emergency Action Plan

We have submitted a paper pertaining to the model

comparison study that we (KY Division of Water) did

using a FEMA grant to ASDSO that will be coming out

in the spring edition of the “The Journal of Dam

Safety” (March 2015).

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Brian Shane Cook, PE, LSIT

Assistant Dam Safety Engineer

North Carolina Land Quality Section

Shane.Cook@ncdenr.gov

References

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