Measuring Authority Coal-Face to Archive...NRFA & NGLA 30th Anniversary Hydrometric Data: The Long...
Transcript of Measuring Authority Coal-Face to Archive...NRFA & NGLA 30th Anniversary Hydrometric Data: The Long...
NRFA & NGLA 30th Anniversary
Hydrometric Data: The Long View
Measuring Authority Coal-Face to Archive
22nd October 2013
CEH Wallingford
Richard Brown, Head of Hydrology
Interaction with NRFA
Mutual Benefits
Reflections
Service Level Agreement
Interaction with NRFA
Mutual Benefits
Reflections
“According to this, the gauging station ought to be about here!!”
Liaison Visits and
Data Audits
Shop Window
Web Access
Most popular part!
SEPA
NRFA
x55k access in 2012
Flood Risk Management National Flood Risk Assessment (2011)
125,000 properties 1 in 13 businesses 1 in 22 homes
Flood Hazard Maps for Scotland
Dumfries example Q200 Good match with more expensive model CEH Flow grid improved across Scotland by using real data from Gauging Stations Upstream gauging station high value Good flood history
SEPA Gauging Stations
www.sepa.org.uk/data/river_levels/index
or
www.riverlevels.mobi
Groundwater Levels
72 sites (33 SEPA)
Earliest 1976
Knowhead borehole, FifeGroundwater level daily means
1997-2013
4647484950515253545556
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Knowhead, Fife 1997-2003
2013 Resources Hydrometry/Hydrology
49 out of 125 staff
£2.3M out of £7.3M
The Long View William Newsam McLean MA, CEng, (Captain, RE) 1874-1968
River Dee Cairnton, Woodend
1929
River Garry 1913
Underpinning Data - Then
Underpinning Data - Now
358 licences in past 6 years Average 416 kW
The Long View
Richard Brown HRPB and SEPA 1980-20??
Some Reflections…..
0
100
200
300
400
500
1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2020
Num
ber o
f Gau
ging
Sta
tions
Garry Old and New
1913 1996
1997
Revisit, Review, Renew
Loggers Change
1913
1980
2011
1980
Acoustic Doppler Current Profiler
- Fixed Instruments
Argonaut SW Argonaut SL
Radar level sensor
Radar water level sensor
Acoustic Doppler surface velocity sensor
RQ-30 for Non-contact Flow Measurement
ADCP Flow Measurement
ADCP Boat Deployment
StreamPro RioGrande
S5 Q-Boat
Remote controlled ARC-boat
Sills of Clyde, 2013 River Ness, 1930
Boat Gauging Changes!
Innovative ADCP (Pentamaran?), 2011 Strathmore River, 1983
Construction Challenges
Challenges ……
More Stringent Legislation - H&S, CAR etc
Flow Measurement Challenges
Resourcefulness!
Rising to Challenges
= Team Building
Changing Rainfall
Wetter Winters
1961-2004
Mind the Gap!
Bridging the Gap
Water Resources
Hydrometry Flood
Hydrometry
Flood Water Resources
Hydrometric Data – the Long View – the Last Laugh?