MISSOURI RIVER – HEC RAS MODEL
1500 CROSS SECTIONS [XS] 121 STORAGE AREAS [SA] 160 LATERAL STRUCTURES [LS] 50 STORAGE AREA CONNECTIONS [SAC] OVER 2000 CROSS SECTION LEVEE PT’S 1 NAVIGATIONAL DAM AND 2 INLINE WEIRS 5 RIVERS DYNAMICALLY MODELED 50 LATERAL INFLOWS
MBRFC – Lori Schultz
XS WITH BOTH LS AND XS PT LEVEE
XS PT LEVEE
LS & SA BEGINS HERE
LATERAL STRUCTURE METHOD OF LEVEE MODELING
LS 550.011 FLOWS TO SA L-575
GIS CREATION OF OVERBANK SA, LS, AND SAC
LS 503.011
SA HOLT 10
SAC 493.65L
WHAT A DIFFERENCE A BREACH MAKES
MODEL ISSUES, CAVEATS, AND MORE ISSUES…
UNGAGED LOCALS ARE 18% OF MISSOURI RIVER FLOWS
CORRECT RATINGS? EVEN GAGED LATERAL INFLOWS CAN BE WRONG
LIMITED ARCHIVE DATA AND DETAIL TO COVER RANGE OF EVENTS
REAL WORLD DETAIL NOT AVAILABLE: sandbagging, local farmer levees, ground water upwelling behind LS’s…
PUMPING AND MANUALLY OPERATED SLUICE GATES HARD TO QUANTIFY
LS’S/SAC’S CAN ONLY BE BREACHED ONE TIME AT ONE PLACE
DISTRESS POINTS: BREACHES AND OVERTOPS
SO MANY BREACHES, SO LITTLE FLEXABILITY
OPERATIONAL ISSUES, CAVEATS, AND MORE ISSUES
IT’S ALIVE !! CHPS-RAS ADAPTER IS ONLY AVAILABLE FOR RAS 4.1, RAS 4.2 IS NEEDED TO
BREACH SAC’S
NO PUMPS IN CHPS-RAS ADAPTER
RAS IS MORE SENSITIVE TO BAD INPUT THAN THE HYDROLOGIC MODEL
GETTING DETAILED INFO FROM FIELD
GIFTS FORECAST SOFTWARE
CHPS OPERATIONAL SOFTWARE, MOD WINDOW
THANK YOU
DON MEIER – KC CORPS
GARY BRUNNER, CAMERON ACKERMAN, STEVE PIPER – HEC
SCOTT WATSON & KRIS LANDER – NWS, FOR GIS SUPPORT
MARK ZIEMER – NCRFC, NWS
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