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![Page 1: Virginia’s IFLOWS System and Future Approaches to … › public › presentations › VLWA2008.pdfVirginia’s IFLOWS System and Future Approaches to Dam Safety Sam Utley Division](https://reader033.vdocuments.site/reader033/viewer/2022060418/5f159b597c2f5a0f185474b9/html5/thumbnails/1.jpg)
http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Virginia’s IFLOWS System and Future Approaches to Dam Safety
Sam Utley
Division Manager, Environmental Monitoring Services
3154 State Street, Blacksburg, VA 24060
PH: 540-961-7894 x427
March 10, 2008
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
MapTech
• Environmental Modeling / Geospatial Analysis
– Hydrologic, Hydraulic, Inundation
• Environmental Monitoring
– Water Quality, Discharge, Bacterial Source Tracking, Systems Integration for Automation
• Dam Safety and Automated Flood Warning
– Dam Inspections, Instrumentation, EPP and EAP preparation
• Laboratory Analysis
– Water Quality, Bacterial Source Tracking
• Software Development
– Desktop, Palmtop, Web, Database, Model Integration, Embedded
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Integrated Flood Observing and
Warning System
• National Weather Service program
• Started in 1979
• Prototype completed in 1981
• Vastly expanded by 1986 in the areas hit hardest by
Juan (1985)
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
IFLOWS Today•State owned with the aid and guidance of the
NWS
•Links 13 states along the Eastern U.S. with
approx. 250 Computer/Base Stations and 1450
sites
•285 sites within VA which are installed, repaired,
updated, and maintained by MapTech, Inc of
Blacksburg, VA
•Data fed into NWS - Advanced Weather
Interactive Processing System (AWIPS) and
other forecast models
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
![Page 6: Virginia’s IFLOWS System and Future Approaches to … › public › presentations › VLWA2008.pdfVirginia’s IFLOWS System and Future Approaches to Dam Safety Sam Utley Division](https://reader033.vdocuments.site/reader033/viewer/2022060418/5f159b597c2f5a0f185474b9/html5/thumbnails/6.jpg)
http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
VA-IFLOWS
• Gages / Transmitters
• VHF Repeaters
• Microwave Transmitters
• Base Stations
– IFLOWS v4.6 Software
– Local Audible Alarms
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Gage / Transmitters• Sensor(s)
– Precipitation, Water Level, Wind Speed
• Data Collection Platform (DCP) and VHF Transmitter
– Switch Closure, Analog, SDI-12
– In VA, Limited To Transmitting 5 Parameters Per Site
– One-Way VHF at 169.5 MHz
• Power System
– Powered By Battery Charged By Solar or AC/DC Converter
• Enclosure– Stand Pipe, Gage House,
Facility, Mounted Enclosure
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Enclosure
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Base Station / IFLOWS v4.6
• Generally located at EOC
• Passive Receipt
• Short Term Data Logging
• Programmable audible alarms.
• Generally managed locally with phone support
• Free Software (as in price)
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
![Page 12: Virginia’s IFLOWS System and Future Approaches to … › public › presentations › VLWA2008.pdfVirginia’s IFLOWS System and Future Approaches to Dam Safety Sam Utley Division](https://reader033.vdocuments.site/reader033/viewer/2022060418/5f159b597c2f5a0f185474b9/html5/thumbnails/12.jpg)
http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
More Advanced Technology
Available and Affordable Since
Inception of IFLOWS Program
• Robust sensors
• Fast, low power, embedded systems
• Many migrating to digital broadcasting
• Widespread cellular and internet availability
• License free communications
• Revolution in personal communications
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Automated Flood Warning System
(AFWS)
or
Automated Monitoring System
Automated detection of pre-flood, hazardous, or
dam failure prone conditions coupled with
automated notification of emergency personnel and
community
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Emergency Personnel
Emergency Personnel
Receiver / Decision
Support
Site 1
Site 2
Site 3
Community / Reverse
911
Community / Reverse
911
National Weather Service
National Weather Service
Roadway
Gates
Sirens
TrafficControl
Signs
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
What To Measure?
• Precipitation
• Water Level
• Temperature
• Barometric Pressure
• Wind Velocity
• Soil Moisture and Conductivity
• Turbidity
• Image Acquisition
And More …
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Retrieving Information
• UHF/VHF
• Spread spectrum
• WiFi
• Cellular
• Satellite
• Ethernet
• Short-haul and land-line
VA-IFLOWS gage
that monitors
precipitation using
a rain gage
tipping bucket and
stream level using
a 30 PSI pressure
transducer.
Transmits data via
VHF base station
computer.
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Survey Your Existing
Communication Resources• Are your emergency services migrating to digital
broadcast? Is there room for your data?
• Can you piggy back onto your city’s Utili-Net?
• Are your gages located in a WiFi cloud?
• Does your organization have a great deal on
cellular broadband service?
• Would it be cost effective to run dial up or
broadband lines to the sites?
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Base Station• Passive receipt and or
active polling of stations
• Data logging/display, trend analysis, predictive modeling
• Programmable alarms: audible, phone, email, text message, remote control of signs, lights, gates, and sirens
• Redirect information
• Remote Access / Maintenance
Base station computer located at
Richmond City Hall. Utilizes DEC’s
DataWise to collect, log, and analyze data.
Issues alarms via email to emergency
personnel. Anticipate future upgrade to
control remote siren on Market Street.
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Will Using Different Technology Affect My Ability
To Participate In Virginia’s IFLOWS Program?
• Currently, data in Virginia is centrally collected
within VA and then sent to the NWS.
• Data from your network can be shared in this
same manner in variety of ways.
– Port data to IFLOWS v4.6 and broadcast on
“backbone”
– Send data to Richmond via internet (TCP/IP) *
– Send data directly to NWS via internet (TCP/IP) **
* Pending VSP implementation of additional computers running IFLOWS 4.6 or more modern data collection software; ** Will be available in a few months when NWS upgrades to new software.
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
IFLOWSIFLOWS
YourAFWS
Network
YourAFWS
Network
Internet(TCP/IP)
“Backbone” via VHF
www.AFWS.net, or eventually RSS Feeds
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http://www.maptech-inc.com/public/presentations/VLWA2008.pdf
Questions?
Sam Utley
540-961-7864 x427