WCSRT river temperature recording

WCSRT temperature loggers monitor the daily warming and cooling patterns of river water at specific sites, particularly through the summer months. Over the years the number of loggers/sites is increasing and provide a useful resource.

Equipment tests

WCSRT loggers are tested for consistency. At 15C most loggers are within 0.05C of each other and the maximum difference between two of the loggers has been 0.1C. Tests are conducted each spring and autumn (2011-2016) and performance is better than the manufacturers claimed accuracy of +/- 0.4C at 20C.

Logging intervals

Generally WCSRT loggers are set to record water temperature every 15 minutes. This period is widely adopted by other organisations using temperature loggers.

File index
The raw data files can be downloaded and WCSRT encourage the sharing of information. Limited summary results appear in our Newsletters. Files are listed separately by year, by catchment, river and named site, with start and end dates of temperature recording in the river. Monthly mean, max and min are added from 2014 onwards. For most files it is advisable not to rely on data before 1st June and after 30th Sept, as some results may represent air temperature when the loggers were put out and retrieved. * Footnotes describe known data anomalies. Please report any additional data anomalies you find to WCSRT. Thank you.

 
All Data 06/2011- 11/2016   
Catchment River Site Start Finish  
Stour Allen Walford 06/2011 11/2016 Download
Stour Allen Wimborne^ 06/2011 11/2016 Download
Avon Avon Ibsley² 06/2011 11/2016 Download
Avon Avon Ringwood 06/2011 11/2016 Download
Avon Harbridge carrier downstream end 06/2011 11/2016 Download
Avon Woodside carrier downstream end* 06/2011 11/2016 Download
Avon Bickerley carrier downstream end"**² 06/2011 11/2016 Download
Test Anton Fullerton (Downstream) 06/2014 11/2016 Download
Test Test Fullerton**^ 06/2013 11/2016 Download
Test Test Leckford² 06/2013 11/2016 Download
Test Test Kimbridge carrier* 06/2011 11/2016 Download
Test Test Kimbridge main* 06/2011 11/2016 Download
Test Dun Mottisfont 06/2013 11/2016 Download
Itchen Itchen Itchen Stoke 06/2012 11/2016 Download
Itchen Itchen Durngate** 06/2012 11/2016 Download
Itchen Itchen Twyford^ 06/2012 11/2016 Download
Meon Meon Mislingford 06/2013 11/2016 Download
Meon Meon Mayles Lane 06/2013 11/2016 Download

2016 Lower Itchen Data 

Ten new WCSRT temperature loggers were deployed in 2015 on the Itchen below Twyford in collaboration with fisheries and riparian owners. The daily pattern of warming/cooling at each site on hot days will be examined aiming to check for anomalies in the natural downstream sequence of rising river temperature. Potential influences include: slow-flowing diversion channels, groundwater upwelling, reaches with extensive treeshading, water abstraction at Otterbourne and treated sewage discharge at Chickenhall. Further details of the project and its collaborators can be found Here.
 
A viewable map Here shows the average and maximum river temperatures recorded by WCSRT Itchen loggers over a short period (1-5 July 2015) when England experienced its record air temperature of 36.5°C at Heathrow.
 
Itchen Itchen Bishopstoke 06/2015 11/2016 Download
Itchen Itchen Lower Itchen Fishery (Middle) 06/2015 11/2016 Download
Itchen Itchen Lower Itchen Fishery (Top) 06/2015 11/2016 Download
Itchen Itchen Breach Copse Spring 06/2015 11/2016 Download
Itchen Itchen Highbridge 06/2015 11/2016 Download
Itchen Itchen Otterbourne Waterworks (Upstream) 06/2015 11/2016 Download
Itchen Itchen Otterbourne Waterworks (Downstream) 06/2015 11/2016 Download
Itchen Itchen Standford Meadows STW (Upstream) 06/2015 11/2016 Download
Itchen Itchen Standford Meadows STW (Downstream) 06/2015 11/2016 Download

*  2011 Woodside carrier: logger recovered after being dredged out during channel maintenance in mid-August.
*  2011 Kimbridge carrier: logger display indicating period of air-exposure in August.
*  2011 Kimbridge main river: logger was unshaded for a time then re-located after a tree fell in the river.
" 2012 Bickerley carrier: logger inaccessible until early 2013 (severe floods)
^ 2013 Allen Wimborne: logger partly exposed to air from mid-July. Bickerley carrier: Jan-Mar 3013 values also available.
^ 2013 Test Fullerton: logger exposed to air 10 Aug - 7 Sept.
^ 2013 Itchen Twyford: a few sharp daily temperature peaks from mid-August on warm days - very small influence on monthly mean.
** 2014 Bickerley carrier: change in logger location, moved 200m d/str, logger burial by silt greatly reduced max/min temperature range after July.
** 2014 Test Fullerton: logger exposed to air after mid-June.
** 2014 Itchen Durngate: some large daily temperature changes in June/July suggests extended periods with air-exposure of logger - possibly d/str sluice opened? 
² 2015 Avon Bickerley carrier
: logger missing on retrieval.
² 2015 Avon Ibsley: logger exposed to air temperatures for periods when river level was low adjacent to weir.
² 2015Test Leckford: logger missing on retrieval.
² 2015 Itchen Upper Waterworks top: logger lost in post. 
*Avon Bickerley carrier: logger not deployed in 2016. Avon Ibsley: logger exposed to air temperatures for periods when river level was low adjacent to weir. Test Leckford: logger failed to start so no records for 2016. Itchen Breach Copse Spring: recording not repeated in 2016. Itchen Upper Waterworks top: 2015 & 2016 data added after logger re-found. 

 
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