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SHARP

Mark Love / Hydrologist / SERFC

Supplemental

Hydro-

Analysis &

Response

Program

July2007

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Background / Motivation Background / Motivation

OFFICE GOALS: A couple years ago, John Feldt initiated an overall office goal called FARBII.(FAst Response Basin Improvement Initiative)

Policy Tools (i.e. software)SAS

SHARP is one software tool (of many) that helps to keep forecasters at a high level of situational awareness.

...With the goal to keep from getting "burned" by those fast responding basins.

IDP GOALS: Professional / Personal goals to increase proficiency in...

GISOOPClassesInheritanceSub/Super classesInterface programmingPolymorphismDesignData flow controlAWIPS->PC->AWIPSProgram controlDatabase control15,000+ lines of codeIntegrate previously organized GIS datasets

SHARP stands for…

S – Supplemental (to official systems) H – Hydro A – Analysis – lots of number crunching R – Looks for River Response P – Program

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The goal is to produce a "RiverWatch"-type program that will look for hydro problems and will produce alerts / products based on what it finds.

Create an alert for Segments that...

are currently flooding

are forecast to flood

are forecasts that need updating

are rising rapidly, but still below floodstage

Program GoalsProgram Goals

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Must…

Have an easy to use GUIHave a graphical display suitable for SASReal-time (up to 20min behind AWIPS) 24x7 operationAutomatic generation of hydrographs / products

for segments that satisfy “alert” criteria"On Demand" Hydrograph generation from GUIProducts sent back to AWIPS

Afterthoughts:

-DSAP (Daily Situational Awareness Product)-Precipitation Visualization (simple) – over fast responding basins-Web graphics (not quite there – orig meant for internal)-“Additional use” of picking up bad data

Additional GoalsAdditional Goals

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MAIN SHARP GUIMAIN SHARP GUI

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Associated Map DisplayAssociated Map Display

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Sample "Alert" HydrographSample "Alert" Hydrograph

"MIKEOBJECTS" Timeseries Package(free objects to embed)

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DATA SOURCES

The data must be transferred from AWIPS to the Windows PC box.

DATA FLOW

Data flow (volume) is not always constant. The programming must be flexible enough to have temporary storage.

REAL-TIME DATABASES (2)

1.) Flood status, warning levels, alerts 2.) Data for the last 5 days, future 7 days

STATIC GIS DATABASE

1.) Basins, rivers, dams, lakes, elevation grids, etc 2.) xmrg

DATA CONVERSION

Text files from AWIPS must be formatted for insertion into GIS Databases

GIS VISUALS

Flood maps, data exploration, precip overlays, alert maps

SHARP GUI

Forecaster interaction, quick hydrograph generation, overview of flood status, overview of flood potential

SHARP SEARCHES

Programming – interaction with databases to identify “hotspots”

SHARP

AWIPS DATA

DATABASE

COMPONENTS

1

3

2

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DATA

RAW data

Batchpst Input FilesSTG, TWEL, PELVPP01/03/06/24RQME, QIN, SNOG(ftp’d every 10 minutes)

Xmrg grids(ftp’d every 60 minutes)

RVF products(ftp’d often)

SAC-SMA Model States (ftp’d once a day)

TECHNOLOGY Utilized

CYGWINC program to convert Xmrg to

ASCII

VB.NET program converts an RVF product into simple columns for subsequent insertion to DBs

VB.NET performs all searches and number crunching

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FAST RESPONSE

GOAL: Identify and alert segments that are rising quickly.

DIFFICULTY #1: A half foot at location “A” means something different than a half foot at say location “B”DIFFICULTY #2: It’s too messy dealing with individual observations to come up with a rate.DIFFICULTY #3: “Weed out” normal regulation activity / tidal effects.

DIFFICULTY #4: “Weed out” data that is far below flood stage.

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False Alarms? Rare, because…

24-048-24

1.) Mean(24-0) > Mean(48-24)

2.) Variability(24-0) > Variability(48-24)

3.) MAXob(24-0) > (LowestAlertSTG – Mean(48-24) * 0.625) + Mean(48-24))

STATISTICAL CALCULATIONS (to identify fast river rises)

• Regulation fluctuations fail #1 and/or #2

• Quick falls fail #1

• “Noise” is filtered by #3

IF #1 and #2 and # 3, THEN…

FAST RESPONSE ALERT

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• Program retrieves any data available that is less than 3 hours old

• Retrieves the value of the oldest ob

• Retrieves the value of the most recent ob

• Calculates Rising/Falling/Steady

• Determines if we can reach our next forecast time by this trend

• If not, TREND ALERT

TREND CHECKGOAL: to identify forecasts that may need to be

updated

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Precip Display (Simple)

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Ooops

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Simple Data Archive

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PROGRAM CONTROL

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NDFD QPF

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Where to go from here?

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