flow time time series hydro featureshydro network channel system drainage system arcgis hydro data...
TRANSCRIPT
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Flow
Time
Time Series
Hydro Features
Hydro Network
Channel System
Drainage System
ArcGIS Hydro Data Model
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HEC tools and ArcHydro
Flow
Time
Time Series
Hydro Features
Hydro Network
Channel System
Drainage System
HEC-GeoHMS
HEC-GeoRAS
DSS
National Hydro Data
CWMS
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GIS in Water Resources Consortium
Bringing together these two communities by using a common geospatial data model
http://www.crwr.utexas.edu/giswr
GIS
CRWRCRWR
Water Resources
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Arc Hydro Milestones
• Feb 1999 project initiated
• July 1999 Consortium established
• August 1999 kickoff meeting of Consortium
• Feb 2000 GIS in Water Resources Conference in Austin
• June 2000 First draft data model and book completed for GIS Hydro 2000 workshop in San Diego
• Dec 2000 NHD Applications Symposium in Austin
• Feb 2001 Arc Hydro design completed
• July 2001 Revised book to be completed for GIS Hydro 2001 workshop in San Diego
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Geodatabase Book Series
General Geodatabasein ArcInfo 8
Geodatabasemodels forapplicationareas
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CD-ROM at back of book
ArcGIS Hydro
UML diagrams, Repository,Example Geodatabases
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ArcGIS Hydro Data Model
Hydrography Hydrology
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ArcGIS Hydro ImplementationGeodatabase
Feature Dataset
Feature Class
Geometric Network
Object Class
Relationship
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ArcGIS Hydro Data ModelFebruary 28, 2001
Hydro Features
HydroLine
Source Features
HydroFeature
Feature
HydroIDFeatureTypeIncludeOnNetworkName
Channels
Feature
How to readthis diagram
Copyright ESRI 2001. All Rights Reserved.
Types of Classes
An ESRI Object class cannot be used to create newobjects but is a specification for instances ofsubclasses (through type inheritance).
An Abstract class is a class for which no instancesmay be created. In a class diagram you indicate thata class is abstract by showing its title in italics.
A Feature class is a class for objects that inherit fromthe feature class. Feature classes can also beassociated with Coded Value Domains and Subtypes.
A Multiplicity is a constraint on the number of objects that canbe associated with another object. Association, aggregration andcomposition relationships have multiplicities on both sides. Thisis the notation for multiplicities: 1 One and only one (if none shown, '1' is implied) 0..1 Zero or one M..N From M to N (positive integers) * or 0..* From zero to any positive integer 1..* From one to any positive integer
Aggregation is an asymmetric association inwhich an object from one class is considered tobe a "whole" and objects from the other class areconsidered "parts".
Composition is a stronger form of aggregation inwhich objects from the "whole" class control thelifetime of objects from the "part" class.
Type Inheritance
Association 1..* Multiplicity
Domain Domain
Composition
ESRI Class
*
Abstract Class
Subtype
Attributes
FeatureClass
FeatureClass
Attributes Attributes
An N-ary association specifies that more thantwo classes are associated. A diamond is placedat the intersection of the association branches.This diagram has several examples of aninstantiation of an object from two other objects.
Subtype
HydroPoint
ProfileLineType
ProfileLine
Thalweg
RightBank
LeftBank
RightFloodLine
LeftFloodLine
Subtype
CrossSection
CrossSectionIDCrossSectionTypeProfileM
1
Object
Time Series
Flow
Time
Flow
GIS in Water ResourcesConsortium
CRWRCRWRCRWR
Structure
MonitoringPoint
HydroArea
AreaInSqKmWaterbodyID
Hydro Network
DrainagePoint DrainageArea
AreaInSqKmNextDownstream
1
Drainage
DrainageFeature
HydroIDDrainageID
Catchment
Feature
Basin
HydroResponseUnit
AreaInSqKm
Watershed
DrainageLine
ComplexEdgeFeature
HydroJunction
SimpleJunctionFeature
OutletJunction
HydroIDDrainageID
HydroIDWaterbodyID
Subtype
11
NaturalChannel
ConstructedChannel
Pipeline
Culvert
WaterbodyFlowline
Shoreline
Coastline
Connector
HydroEdge
HydroIDReachIDRiverIDNameLengthInKmLengthDownstreamFlowDirectionHydroEdgeType
ChannelFeature
HydroIDReachIDRiverID
WaterWithdrawal
Waterbody
HydroPointEvent
Measure
HydroLineEvent
FromMeasureToMeasure
CrossSectionPoint
CrossSectionIDCrossSectionMElevation
1
1..*TimeSeries
Object
FeatureIDTSTypeTSDateTimeTSValue
HydroEvent
MeasureID
Object
Bridge
Dam UserPoint
WaterDischarge
Types of Relationships
Associations represent relationships between classes.They have defined multiplicities at both ends.Type inheritance defines specialized classes ofobjects which share properties and methods with thesuperclass and have additional properties andmethods.Instantiation specifies that one object from one classhas a method with which it creates an object fromanother class.
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GIS in Water Resources ConsortiumArcGIS Hydro Data Model
CRWRCRWRCRWRFeb 28, 2001
Hydro Features
HydroLine
Source Features
HydroFeature
Feature
HydroIDFeatureTypeIncludeOnNetworkName
HydroPoint
Structure
MonitoringPoint
HydroArea
AreaInSqKmWaterbodyID
WaterWithdrawal
WaterbodyBridge
Dam UserPoint
WaterDischarge
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GIS in Water Resources ConsortiumArcGIS Hydro Data Model
CRWRCRWRCRWRFeb 28, 2001
Hydro Network
ComplexEdgeFeature
HydroJunction
SimpleJunctionFeature
OutletJunction
HydroIDDrainageID
HydroIDWaterbodyID
Subtype
NaturalChannel
ConstructedChannel
Pipeline
Culvert
WaterbodyFlowline
Shoreline
Coastline
Connector
HydroEdge
HydroIDReachIDRiverIDNameLengthInKmLengthDownstreamFlowDirectionHydroEdgeType
HydroPointEvent
Measure
HydroLineEvent
FromMeasureToMeasure
HydroEvent
MeasureID
Object
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GIS in Water Resources ConsortiumArcGIS Hydro Data Model
CRWRCRWRCRWRFeb28, 2001
Drainage
DrainagePoint DrainageArea
AreaInSqKmNextDownstream
DrainageFeature
HydroIDDrainageID
Catchment
Feature
Basin
HydroResponseUnit
AreaInSqKm
Watershed
DrainageLine
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GIS in Water Resources ConsortiumArcGIS Hydro Data Model
CRWRCRWRCRWRFeb 28, 2001
Channels Feature
ProfileLineType
ProfileLine
Thalweg
RightBank
LeftBank
RightFloodLine
LeftFloodLine
Subtype
CrossSection
CrossSectionIDCrossSectionTypeProfileM
Object
ChannelFeature
HydroIDReachIDRiverID
CrossSectionPoint
CrossSectionIDCrossSectionMElevation
1
1..*
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GIS in Water Resources ConsortiumArcGIS Hydro Data Model
CRWRCRWRCRWRFeb 28, 2001
Time Series
Flow
Time
Flow
TimeSeries
Object
FeatureIDTSTypeTSDateTimeTSValue
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National Hydro Data Programshttp://www.crwr.utexas.edu/giswr/nhdconf/nationalhydro.html
National Elevation Dataset (NED)
National Hydrography Dataset(NHD)
Watershed Boundary DatasetNED-Hydrology
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Watersheds of the US
2-digit water resource regions 8-digit HUC watersheds
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Hydrologic Unit Code Watersheds~ 2000 for US, about the size of counties
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Watershed Hierarchy
8 HUC
4
2
6
NED-H
1012
Available In Progress
Digit #
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Watershed Boundary Dataset
• National Program by USGS and USDA (NRCS)
• Boundaries for 10- and 12- digit watersheds
• First cut is by automated delineation from NED
• Hand checked and edited
10-digit watersheds
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• National program by USGS and NWS
• 5000 cell threshold on a 30m DEM (~ 8 km2 average drainage area)
• ~ 1 million catchments for US when completed
• Includes grid derived products e.g. topmodel index
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EPA River Reach File 1 (RF1)
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River networksfor 8-digit HUC watersheds
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Lower West Fork, Trinity River BasinHUC = 12030102
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NHD River Reaches
412 River ReachesIn Upper West Fork
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River Reach Codes
Rch_Code = 12030102000151
Rch_Code = 12030102000005
HUC# Segment#
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National Water Information System
Web access to USGS water resources data in real time
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National Hydro Data Programshttp://www.crwr.utexas.edu/giswr/nhdconf/nationalhydro.html
National Elevation Dataset (NED)
National Hydrography Dataset(NHD)
Watershed Boundary DatasetNED-Hydrology
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How do we combine these data?
DEMs Watersheds Streams Waterbodies
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An integrated raster-vector
database
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Data Model Based on Inventory
NHD Points
Gages
NHD Areas
NHD Lines
Dams
Bridges
Make an inventory of all features of a given type in the region
What is it?Where is it?
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Data Model Based on BehaviorFollow a drop of water from where it falls on the land, to the stream, and all the way to the ocean.
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Integrating Data Inventory using a Behavioral Model
Relationships betweenobjects linked by tracing pathof water movement
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AB
? ?
Where Does the Raindrop Go?
Dale Honeycutt’s concept, May 2000
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AB
Water Flows from an Area to a Line
Problems with this: • Areas and lines are not always consistent with one another. • Sometimes many lines within one area.
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AB
How to Connect Areas to Hydronetwork?
Outlet Points
Areas connectto lines at points
Regardless of where the drop falls in the area, its runoff is on thenetwork at the outlet point
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Where Does the Raindrop Go?
Watershed DEM Flow direction andDEM streams
Drainage areaand raindrop path
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HydroNetwork
Watershed and Stream Reaches
Catchments and Outlet Junctions
Downstreamtrace
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Traces and Relationships
Upstream Trace Selected Catchments + Downstream trace
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Basins and Watersheds
Upper Washita Basin (HUC8) 10-digit watersheds and outlets
Watershed 1113030213
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Downstream Trace
Watershed 1113030213
NHD for theUpper Washita
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Scales of Analysis
Network forlarger areas
DEM for smaller areas
(Up to 20 million cells)