watershed management and modeling engineering with nature ... · design of a new mouth for the don...
Post on 30-May-2020
2 Views
Preview:
TRANSCRIPT
Watershed Management And Modeling
Engineering With Nature – Proposed Design Tool
Watershed Management And Modeling
1) Gridded Surface Subsurface Hydrologic Analysis (GSSHA)2) Nutrient Simulation Module3) Contaminant Simulation Module4) Mercury (HG) Simulation Module5) Riparian Vegetation Simulation Module
Existing ERDC Tools and Modules
Models and Modules need to be integrated
Watershed Management And Modeling
GSSHA Modeling Capabilities
Evapotranspiration
Stream Network
Overland Flow
Infiltration
Groundwater Reservoirs and Detention Basins
Wetlands
Storm and Tile Drain Networks
Water Quality
ErosionErosionFrozen Ground
and SnowFrozen Ground
and Snow
Water temperature modelling is in progress
Watershed Management And Modeling
Nutrient Simulation Module I (NSMI)
Bed sediment
OrgN NH4
NO3
OrgP TIP
POC DOC DIC
∑CBODPOM
DO
Ap Ab
Alkalinity
Pathogen
N2
Water column Uptake
Oxidation
Decay
Decay
Mortality
Nitrification
Hydrolysis
Release
Respiration Dissolution
Decay
SOD
Denitrification
SettlingAtmospheric reaeration
Reduced State Variable list for N, P,
and C cycles
Watershed Management And Modeling
Nutrient Simulation Module II (NSMII)
RDOCLDOC
RPOCLPOC
Bed sediment
DON NH4
NO3
DOP TIP
DIC
∑CBOD
DO
∑Ap Ab
Alkalinity
Pathogen
RPOPLPOP
RPONLPON
CH4 HxS
DSiBSi
Water column
Nitrification
Uptake
Mortality
SOD
Dissolution
Denitrification
Oxidation
Atmospheric reaeration SettlingRespiration Hydrolysis Mineralization
Release
Expanded State Variable list for N, P,
and C cycles
More Algal groups
Bed Sediment Diagensis
Watershed Management And Modeling
Sediment Diagenesis ModuleWater
Sedimen
t laye
r 1Se
dimen
t laye
r 2
Diagenesis
POCG1,2
CH4, H2S,
NH3, CO2
POCG3,2
POCG2,2
PONG1,2
PONG3,2
PONG2,2
POPG1,2
POPG3,2
POPG2,2
PON
POP
POC Diagenesis
Diagenesis
CH4
NH4 (d)
PO4 (d)
H2S (d)
NO3
Partitioning
Burial
CH4
H2S (d)
NH4 (d)NO3
PO4 (d) Partitioning
Particle mixingDiffusion
Burial
CH4 H2S NH4NO3 DIP
BSi Si (d)
Si (d)
DSi
Dissolution
NH4 (p)
PO4 (p)
H2S (p)
Si (p)
Partitioning
Partitioning
Partitioning
H2S (p)
NH4 (p)
PO4 (p)
Si (p)
Ap, POC, PON, POP, BSi
Dep
osition
Transfer
Detailed Water Quality Analysis of Bed Sediments
Watershed Management And Modeling
Contaminant Simulation Module
DOC Sorbed Phase
Dissolved Phase
Diffusion
Diffusion
Dep
osition
Resuspen
sion
Burial
Volatilization
EquilibriumEquilibrium
Non‐equilibrium
Equilibrium Equilibrium
Non‐equilibrium
Water column
Bed sediment
Sorbed Phases
Algae POM Solids
DegradationTransformations
DegradationHydrolysisPhotolysis
Transformations
Sorbed Phases
POM SolidsDOC
Sorbed PhaseDissolved Phase
Dep
osition
Detailed Analysis of Chemicals and Metals. Water Column and Bed Sediment Interactions.
Watershed Management And Modeling
Hg Simulation Module
Hg0
Photodegradation
Oxida
tion Reduction
Volatilization
MethylationDemethylation
Diffusion
Depo
sitio
n
Resuspen
sion
Depo
sitio
n
Diffusion
Depo
sitio
n
Resuspen
sion
Depo
sitio
n
Burial BurialMethylation
Demethylation
Water column
Bed sediment
HgII
Algae POM SolidsDissolved DOC
MeHg
AlgaePOMSolids DissolvedDOC
HgII
POM SolidsDissolved DOC
MeHg
POMSolids DissolvedDOC
Detailed Analysis of Mercury Dynamics. Water Column and Bed Sediment Interactions.
Watershed Management And Modeling
Vegetation Dynamics
Riparian Vegetation Simulation Module
(RVSM)
Nutrient Simulation Modules (NSMs)Advance time, t, by time step
Advance cross section, i
Advance points, k, within cross section
Establishment Module
Growth Module
Mortality Module
Is k > number of points in cross‐
section
Is i > number of cross‐section
Is t > end time
N
N
N
Y
Y
End
Y
Watershed Management And Modeling
Vegetation and Nutrient Interactions
Building upon current riparian vegetation and nutrient simulation
modules while developing new riparian vegetation/nutrient interaction
capabilities.
VegetationNutrient pools
Literature Review done but not
implemented within RVSM yet.
Will support BMP for load reductions. Need to expand to include Chemicals and Metals.
Watershed Management And Modeling
Dynamic Vegetation Roughness
As Vegetation grows and
dies, Hydraulic Roughness is allowed to change.
Watershed Management And Modeling
The Toronto Lower Don Landsproject combined:
Design of a new mouth for the Don River,
Design of engineered control structures,
Detailed hydraulic and hydrodynamic flood
modeling, Permitting, and
Urban design/ landscape architecture for a new district
of the City of Toronto.
Example EWN Projects to be Supported
Watershed Management And Modeling
DALLAS, TX TRINITY RIVER
Dallas, TX – Trinity River Project Includes:
River Channel modification / stream geomorphology
Wetlands creation Park and trail planning Flood management Sediment management Corps permitting and levee
management
Example EWN Projects to be Supported
Watershed Management And Modeling
Provides a physically based modeling system that computes flows, sedimentation, water quality, and vegetation growth and mortality
Supports man‐made and nature based features in urban settings
Allows for fine scale project features Supports USACE mission in flood control while
incorporating nature based features in support of planning and engineering design projects
Summary
top related