Pre Conference Seminars 1 WCS Tracker: A real-time water budget application Project Team: SFWMD: Ken Stewart, PhD., Ron Mierau, PE. PBSJ: Jack Hampson,

Pre Conference SeminarsPre Conference Seminars 11

WCS Tracker:WCS Tracker:A real-time water budget applicationA real-time water budget application

Project Team:Project Team:SFWMD: Ken Stewart, PhD., Ron Mierau, PE.SFWMD: Ken Stewart, PhD., Ron Mierau, PE.

PBSJ: Jack Hampson, Stephen BournePBSJ: Jack Hampson, Stephen BourneCRWR (UT): David Maidment, PhD., CRWR (UT): David Maidment, PhD., Texas A&M: Kelly Brumbelow, PhD.Texas A&M: Kelly Brumbelow, PhD.

Presented by:Presented by:Stephen Bourne, PBS&JStephen Bourne, PBS&J

ESRI UC 2007, Arc Hydro SeminarESRI UC 2007, Arc Hydro Seminar

Pre Conference SeminarPre Conference Seminar 22

• WCS is a Water Control System

• Drainage area that is controlled by flow structures

• Composed of Water Control Catchment (WCC) and Water Control Unit (WCU)

• SFWMD consists of 168 WCS

• WCS concept adopted in early 1990s.

• Lends itself well to conservation of mass.

WCU

WCC

Flow, Q

Q

Q

Q

Rain, R Evapo-transpiration, Evapo-transpiration, ETET

What is A WCS?What is A WCS?

Storage


Apply a Water Budget to the WCS…Apply a Water Budget to the WCS…

tQtQAETRS transswcuwcuwcuwcu )(

tQAETRS transwccwccwccwcc )(

wcuswcuwcuwcuwccwccwccwcc StQAETRAETRS )()(

+

=

)1()())()(())()(()( tSSttQAtETtRAtETtRtS wccwcuswcuwcuwcuwccwccwccwcc

WCUWCU

WCCWCC

Convert to State Space to involve time component…Convert to State Space to involve time component…


What does a water budget look like?What does a water budget look like?



Development StrategyDevelopment Strategy

Short Burn Time Frame - 8 weeks

Pilot Area - 14 WCSs, t = 15 mins

Tasks to arrive at a working real-time water budget:

1. Define Calculation Methodologies

2. Develop Technological Framework

3. Develop Data Collection System

4. Develop Data Processor

Option 1: Focus on a few terms in detail

Option 2: Focus on full water budget using lower accuracy methods for terms


Where does the data come from?Where does the data come from?


WCC

Supervisory Control and Data Acquisition (SCADA)

Real-time remote measurements

Control Structures (Q, Stage)

Gages (R, ET)


RainfallRainfall


i

i

watershed

watershed

grid

gridwatershedi

N

iii

A

A

RR

|

1

i

i

waterbody

grid

gridwaterbodyi

N

iiiwaterbody

A

A

RR

|

1

waterbodywatershedWCC RRR waterbodyWCU RR

GAGEWCUWCC RRR

Next Step: NexRAD-based Rainfall

Initial Method:


Evapo-Transpiration, ETEvapo-Transpiration, ET


Next Step: Grid-based ET estimates

Initial Method:

1. Spatially Variable Coefficients2. ET-field generation from gages3. Remotely Sensed Interpreted ET.

M

j ij

M

j ij

j

i

D

D

ET

ET

1

1

1

i

i

watershed

watershed

grid

gridwatershedi

N

iii

A

A

ETET

|

1

)( GAGEWCUWCC SolarRadfnETET


Flow through WCU, QFlow through WCU, Qss


Initial Method:

Qs,InQs,Out

For a given time, t,

Volume of flow out of structure, Qs(t)t, is given as:

Qs(t)t = Qs,In(t)t – Qs,Out(t)t


Change in Storage in WCU, Change in Storage in WCU, SSWCUWCU


Initial Method:

wcuDownUp

wcu AHH

S2

)(

Awcu

Hup

HDown

Swcu(t-1)Swcu(t)

Swcu

Next Steps: Stage-Storage Based Estimates, 3D Canal volume (Fogg)


Technological Framework: Physical Model to Data ModelTechnological Framework: Physical Model to Data Model

WCU

WCC

Flow, Q

Q

Q

Q

Rain, R Evapo-transpiration, ET

Custom WCS ObjectCustom WCS Object


Technological Framework: Object Model to Data ModelTechnological Framework: Object Model to Data Model

AHED.ArcHydro FeatureDataset

Table

RelationshipClass

FeatureClass

FeatureDataset

Structure WaterBodyWatershed

Time Series Data Cubes

Attribute Series

Catalog

WatershedHasTimeSeries

StructureHasTimeSeries

WaterBodyHasTimeSeries

HydroEdgeHasTimeSeries

HydroEdge

AHED GeoDatabase

WCSHasWatershed

WCSHasOutlet

WCSHasInlet

WCSHasWCU

WCSHasHydroEdge

WCSBoundary Polygons for WCSs

WCS Tracker-Specific

MonitoringPoint

MonitoringPointHasTimeSeries

Re-Analysis Data Cubes

Attribute Series

Catalog

WCSHasTimeSeries

R1, ET1, S* R1, ET1, S1 Qs

1T2, R2

1 - Calculated2 - Measured

Raw Data from SCADA


Time Series and Data CubesTime Series and Data Cubes

HistoricalSystemState

Clean SystemState

RecentSystemState

Data Cubet

variablelocation

HistoricalSystemState

Clean SystemState

RecentSystemState

Time sliceCreated from irregular dataOn t = 15 min

• Times Series are stored in data cubes

• Multiple Cubes are determined by quality of data

• Cubes can be concatenated to create composite time series

Raw Data

Water Budget Data

NowVariableVariable

tt


Estimating NowEstimating Now

t

t

t = 15 min (nom.), Equal interval

t ~ 15 min – 2 hour, Unequal interval

tt = 1 hour, equal interval

St = fn(ETt, Qt, Pt, St-1)

Several parameters must be projected from recent history.

t = Now

R

wcc,

wcu

Qs

ET(T,x)

WCC, WCU

• Incoming real time data is at irregular intervalsIncoming real time data is at irregular intervals

• Must be extrapolated to same time for Water BudgetMust be extrapolated to same time for Water Budget


Robust Processing is EssentialRobust Processing is Essential

Data Processor is triggered every fifteen minutes.Data Processor is triggered every fifteen minutes.Runs a loop to check past window of 8 hours.Runs a loop to check past window of 8 hours.

Define Now(last regular 15 min. time step)

Define Now(last regular 15 min. time step)

Define Process Start Time

(Now – 8 hours)

Define Process Start Time

(Now – 8 hours)

Calculate Water

Budget

Calculate Water

Budget

Build WCS Object

Includes Input time series

Build WCS Object

Includes Input time series

Estimate Input Variables

for Time Slice time

Estimate Input Variables

for Time Slice time

For Each Time SliceProcess if not in datacubeCreate

Collection of Time Slices to Process

Create Collection of Time Slices to Process

For Each WCS

Trigger Start

Trigger Start

Reset Trigger

Time

Reset Trigger

Time

Publish to ReAnalysis Datacube

Publish to ReAnalysis Datacube


Where does WCS Tracker fit in larger SFWMD picture?Where does WCS Tracker fit in larger SFWMD picture?

DBHydro OpHydro DVCP AHED

Federated Databases

Socio-EconomicEcological Models

Data

Information

ODSSKnowledge


Next Steps…Next Steps…

Historical CalibrationHistorical Calibration- 30 year time horizon- 30 year time horizon- Defines ranges for S- Defines ranges for Swccwcc for each water control system for each water control system

Pilot Area ExpansionPilot Area Expansion- Region between Lake Istakpoga and Lake Okeechoobee- Region between Lake Istakpoga and Lake Okeechoobee

Enhanced User ToolsEnhanced User Tools- Tools for automatic WCS mapping and maintenance- Tools for automatic WCS mapping and maintenance- Animation Tools- Animation Tools- Operator Override Tools- Operator Override Tools- Moving to the web- Moving to the web

Uncertainty and Error AnalysisUncertainty and Error Analysis- Understanding how conceptual and instrument error - Understanding how conceptual and instrument error

contribute to uncertainty in storage terms.contribute to uncertainty in storage terms.

Performance UpgradesPerformance Upgrades

Pre Conference Seminars 1 WCS Tracker: A real-time water budget application Project Team: SFWMD: Ken Stewart, PhD., Ron Mierau, PE. PBSJ: Jack Hampson,

Documents

t t q s

q s t t

q q q q rain

s wcu t s wcu

et slide

q s initial method

pre conference seminar4

pre conference seminar2