CWMS Implementationfor the Delaware River Basin
Laura Bittner
Chief, Hydrology, Hydraulics,
and Coastal Section
Philadelphia District
September 7, 2015
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
CWMS Vision / Goals
SEPTEMBER 2016
Figure 2
Vision / Goals
All USACE managed watersheds fully modeled within CWMS with models operated daily to provide decision support to Water Managers and results automatically consolidated to standardized briefing tools within CorpsMapfor executive and public use.
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
CWMS Implementation Status
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
DRB CWMS Objectives
Estimating stream flows in both controlled and uncontrolled subbasinswithin the Delaware River watershed during both high and low flow conditions.
Determining the potential impacts of various release scenarios on reservoir elevation and storage, local flood protection projects and downstream flows, especially in major damage centers.
Identifying additional opportunities for system-wide operation to take maximum advantage of the existing infrastructure for Delaware River flood risk management
Identifying additional opportunities to take maximum advantage of existing infrastructure for Delaware River low flow augmentation.
CWMS Objectives
SEPTEMBER 2016
Figure 4
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Real-time data streams integrated into the interface from 200+ USGS gages and 13 NOAA tidal stations.
Considers the entire 13,539 sq mile watershed
Calibrate to several high flow events and one low flow event
Considers all 5 USACE dams and several non-federal dams
Considers mainstem and major tributaries
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part
without the permission of DRBC.
Watershed Modeling forDecision Support
RAS(Hydraulics)
FIA(Damages)
ResSim(Storage)
HMS(Hydrology)
Modeling
Watershed Modeling
SEPTEMBER 2016
Figure 6
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
MFP - Precipitation Analysis
• Precipitation processed on a grid basis.
• Observed data from NEXRAD or interpolated from gages.
• Future Precipitation Scenarios:– NWS Quantitative Precipitation
Forecasts (QPF)
– Multiples of the QPF
– Manual-entry or standard scenarios (What if?)
• Timing
• Location (watershed “zones”)
Precipitation – MFP
SEPTEMBER 2016
Figure 7
Meteorological Forecast Processor
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Hydrologic Modeling (HEC-HMS)
• Computes runoff from observed data and future precipitation scenarios
• Processes:
– Deficit and Constant or Green Ampt
– ModClark UH Transform
• Grid Cell sizes are 2km x 2km
– Recession Baseflow
– Channel Routing
• Muskingum-Cunge
• Muskingum
• Modified Puls
• Include entire 13,539 sq miles
• Calibrate/validate to several historic events
Hydrologic Modeling – HEC-HMS
SEPTEMBER 2016
Figure 8
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Reservoir Operations
with HEC-ResSim
• Simulates operations through user-defined operating rules and scheduled releases
• Uses reservoir inflow and downstream local hydrographs computed by HEC-HMS
• Automatically generates downstream hydrographs for a “no reservoir” condition for project benefit analysis
• Includes 5 USACE dams plus Cannonsville, Pepacton, Neversink, Lake Wallenpaupack, Rio, Toronto, Swinging Bridge, Cliff Lake, Merrill Creek, Nockamixon, Penn Forest, Wild Creek, and Lake Ontelaunee.
• Calibrate/validate to historic events
Reservoir Operations – HEC-ResSim
SEPTEMBER 2016
Figure 9
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
River Hydraulics
(HEC-RAS)
• Analyzes river hydraulics to compute water depth, velocity, & inundation boundaries
• Computes water surface profiles and stage hydrographs from ResSim and/or HMS hydrographs
• Steady-flow or unsteady-flow analysis
• Inundation boundaries and depth grids computed in RAS Mapper / GeoRAS
• Extends from Reedy Point, DE to Pepacton and Cannonsville Dams
• Major tribs include Schuylkill, Lehigh, and Lackawaxen Rivers
• 750 river miles to be modelled
• Calibrate/Validate historic events
Hydraulic Modeling – HEC-RAS
SEPTEMBER 2016
Figure 10
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0 10 20 30 40 50420
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500
520
540
560
Main Channel Distance (mi)
Ele
vation
(ft
)
Legend
WS Max WS
WS 07SEP2004 1100
WS 07SEP2004 1000
WS 07SEP2004 0900
WS 07SEP2004 0800
WS 07SEP2004 0700
WS 07SEP2004 0600
WS 07SEP2004 0500
WS 07SEP2004 0400
WS 07SEP2004 0300
WS 07SEP2004 0200
WS 07SEP2004 0100
WS 06SEP2004 2400
Ground
OWS Max WS
OWS 06SEP2004 2400
OWS 07SEP2004 0100
OWS 07SEP2004 0200
OWS 07SEP2004 0300
OWS 07SEP2004 0400
OWS 07SEP2004 0500
OWS 07SEP2004 0600
OWS 07SEP2004 0700
OWS 07SEP2004 0800
OWS 07SEP2004 0900
OWS 07SEP2004 1000
OWS 07SEP2004 1100
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Economic / Impact
Analysis (HEC-FIA)
• Computes agricultural and urban damages and project benefits by “impact area”
• Computes damages and benefits between different scenarios, and with and without project conditions
• “Action tables” provide a list and time of actions to take during an event, based on forecasted stages
• Updates to stage damage relations for Delaware River Basin damage centers
River
Level
21
22
23
24
25
26
ST
AG
E (
FT
)
DAMAGES ($1000)
0 100 200 300 400 500 600
Economic Modeling – HEC-FIA
SEPTEMBER 2016
Figure 12
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Impact Area
Stage
(ft) Impact Action
Initial Forecast Modified ReleasesCottage Area 556.0 Flood Warning Stage Initiate reconnaissance and alert appropriate personnel.22Mar2002 0600 22Mar2002 0600
558.0 Flood Stage Full alert, warn of potential evacuation. 22Mar2002 0700 22Mar2002 0700
560.0 Damage to infrastructure, landscape, etc. has begun.Close life lines & roads to everyone but local traffic. 22Mar2002 0900 22Mar2002 0900
561.0 Egress begins to be a problem. Evacuate residences & perform surveillance. 22Mar2002 1000 22Mar2002 1000
Max Flood Stage -
25Mar2002, 07:00 562.63 ft
Max Flood Stage -
25Mar2002, 07:00 562.63 ft
Lock Haven 535.2 Zero stage reading 19Mar2002 1000 19Mar2002 1300
540.1 Flap gates of interior drains under water Check drains to ensure operation 21Mar2002 2300 21Mar2002 2300
543.2 Elevation of Grant Street Dam 22Mar2002 0100 22Mar2002 0100
545.0 Handrails at Summer Beach nearing inundationRemove handrails & close Grant Street Dam platform22Mar2002 0200 22Mar2002 0200
549.0 Grant Street Dam platform elevation 22Mar2002 0400 22Mar2002 0400
553.0 Flood Warning Stage Begin levee patrol 22Mar2002 0600 22Mar2002 0500
556.2 Flood Stage River overtops bank 22Mar2002 0900 22Mar2002 0700
556.3 Bath house floor elevation Close bath house 22Mar2002 0900 22Mar2002 0700
557.2 Prepare to close Closure Structure No. 3 22Mar2002 1000 22Mar2002 0700
559.1 Close Closure Structure No. 3 22Mar2002 0800 22Mar2002 0800
559.2 Prepare to close Closure Structure No. 2, notify Penn DOT and County communications22Mar2002 0800 22Mar2002 0800
561.0 Close Closure Structure No. 2 22Mar2002 1000 22Mar2002 1000
Max Flood Stage -
25Mar2002, 07:00 562.07 ft
Max Flood Stage
- 25Mar2002, 07:00 562.07
ft
Sayers Lake Area 586.0 Streambed None 19Mar2002 1300 19Mar2002 1300
590.0 Gate Sill None 19Mar2002 1300 19Mar2002 1300
610.0 Late Winter Conservation Pool None 19Mar2002 1300 19Mar2002 1300
625.0 Mid winter Conservation Pool None 22Mar2002 1000 22Mar2002 1000
630.0 Summer Recreation Pool None 22Mar2002 1600 22Mar2002 1600
631.0 Marina and Launch Ramps Lift gangplanks connecting marina and launch ramps22Mar2002 1800 22Mar2002 1800
633.0 Marina and Launch Ramps None 22Mar2002 2200 22Mar2002 2200
634.5 Entrance to Parking @ Winter Lot Close road to winter parking lot 23Mar2002 0200 23Mar2002 0300
635.0 Invert, Howard flap gates for interior drainageBegin monitoring Howard interior drainage areas 23Mar2002 0400 23Mar2002 0500
636.0 Top Well # 3 Pump Station at Green BridgeClose road to pump station at Green Bridge 23Mar2002 0900 23Mar2002 1400
636.1 Low Pt. Sycamore Loop Road Close Sycamore Loop Road 23Mar2002 1000 23Mar2002 1500
636.6 Low Pt. Winter Boat Storage Area Move boats from winter storage area 23Mar2002 1400
637 Floor of Restroom-W Hunter Run Launch Beach parkingClose restroom at Hunter Run 23Mar2002 1700
637.4 Low Pt. Road at Hunter Run Launch Close road below Hunter Run parking lot 23Mar2002 2200
637.5 Parking Lot Entrance @ Bald Eagle LaunchClose road to Bald Eagle launch area 24Mar2002 0000
637.7 Entrance to Main Marina Close main marina 24Mar2002 0300
Max Flood Stage -
25Mar2002, 07:00 647.86 ft
Max Flood Stage -
25Mar2002, 07:00 636.41 ft
Time
Impact Action Table
HEC-FIA Output
SEPTEMBER 2016
Figure 13
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
CAVI – Control and Visualization Interface
Model Linkage
SEPTEMBER 2016
Figure 14
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
HEC-RTS Real Time Simulation
SEPTEMBER 2016
Figure 15
RTS – Real Time Simulation
Publicly Available
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
Delaware Implementation Schedule
SEPTEMBER 2016
Figure 16
Path Forward
Currently at the 25% milestone for the CWMS implementation for the Delaware River Basin
CWMS scheduled to be complete by Summer 2017
The RTS version of CWMS would follow
Presented to the DRBC Flood Advisory Committee on Sept. 7, 2016. Contents should not be published or re-posted in whole or in part without the permission of DRBC.
