The Development of a Remote Data Communication System
for Storm Sampling in NYC Tributaries
Presented by: Steve S. Di Lonardo
Co-author: James C. Alair
September 17th, 2008
WSTC Conference – West Point, New York
Introduction
Storm setup & sample collection
Sample processing using the data acquisition software
Data analysis & quality control
Future direction
Field Setup & Sample Collection
Challenges Large sample effort Short event duration Distance between sample sites Adverse field conditions
Auto-Sampler Field Setup
← ISCO auto-sampler
← sampler uptake line
← solar panel
← housing for Campbell data-logger
DEP monitors stream discharge at Kensico streams
Sampling Components
Campbell data logger + ISCO trigger
Intake lines + staff gauge + pressure transducer
ISCO auto-sampler1 L Bottles
Storm Sampling
After the storm, field staff collects samples at each site to be composited based on where samples were obtained along the hydrograph…
Storm Sampling 2005-2007
Prior to the development of remote site connections via modems, data acquisition required on-site PDA downloads
Upon return data was imported into a spreadsheet data manager was required to convert data to
create hydrograph
Storm Sampling 2008
DEP installed modems at each site for remote communication and real-time data acquisition
WISKI provides access to data in a user-friendly format to accelerate creation of hydrographs and make decisions
From the office…..
Click “connect”
Select site & connect
Click “Ports and Flags” to set trigger
Set Flag 4 “High”
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Storm Setup
Remote connection via modem to Campbell data-logger using
the LoggerNet program allows for checking gage station data
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Storage and Management of Data
WISKI - Water Resources Information System KISTERS provides a user-friendly access port for gage
station data data management capabilities facilitates data access in many forms…
• Graphs• Tables• Reports
WISKI generates a data report to facilitate the creation of a storm hydrograph
Storm Sampling
Samples were “split” based on hydrological phases (i.e., rising, peak, descending)
Ideally, each phase would have equal representation (equal volume - sample effort)
This is achieved by having prior knowledge of hydrological conditions at each stream site & determining sample interval and duration accordingly
Storm Hydrograph
Storm Hydrograph
“rising limb”
“peak”
“descending limb”
Beyond Storm Sampling….
USGS Gage Sites
In addition to DEP managed stream gage sites around Kensico, WISKI will import flow data from all other flow gages in the NYC Watershed
Achieved through the use of ADAPS software which collects adjusted flow data from USGS
ADAPS
ADAPS – Automated Data Processing System Developed for the processing, storage, and
retrieval of water data (USGS) Part of National Water Information System
(NWIS) Designed to work interactively with multiple
users
Interactive
watershed maps
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Cannonsville
Pepacton
Schoharie
Ashokan
Neversink
Rondout
Hu
dson
Riv
er
Oneonta
KingstonClick sub-watershed
Data access for WISKI users…
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Cannonsville
Neversink
West Delaware Tunnel
East Delaware Tunnel
Oneonta
Sub-Watershed
Click Gage Stations
Specify dates, parameters
Output format(i.e. graph,report)
Data analysis tool
Field Quality Assurance
DEP field staff performs monthly stream gage site maintenance to assure measured staff height is correct
Check stream rating curves on a scheduled basis
Changes would be recorded and submitted to data manager
Data comment form
Data manager enters comments
data is
automatically tagged w/comment attached
How will this data be checked?
WISKI stores rating curve information…
Adjustment in rating curve automatically adjusts flow data
WISKI can be used as a tool for data analysis and reporting….
Example….
Annual Water Report Useful for water
budgets Mass balance
calculations
Future Direction
WISKI can be used as a sentinel tool
Data alarm notifies manager if a parameter falls out of a specified range (i.e., flow spike on a sunny day can warn of a sewage spill)
Future Direction
Incorporation of other parameters of interest Continuous on-site measurements
(i.e. turbidity, toxins, weather) Import of discrete lab measurements from
LIMS or SAS (i.e. microbiological, chemistry)
HUGE POTENTIAL!
Acknowledgements
Water Resource Development Act (WRDA) - USACE Safe Drinking Water Act (SDWA) - USEPA NYC Department of Environmental Protection (NYC DEP) Kisters North America WWQO Field Group David Lounsbury Christian Pace Kerri Alderisio Lorraine Janus Steve Schindler Sharon Neuman
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