Some thoughts on experimental design or monitoring strategy Data - - PowerPoint PPT Presentation
Monitoring kit (inc. review of survey form) Some thoughts on experimental design or monitoring strategy Data handling and visualisation M ONITORING K IT H ACH P OCKET T ESTER Measures temperature and electrical conductivity
Measures temperature and electrical conductivity which it uses to calculate total dissolved solids – a measure of the amount of ‘stuff’ dissolved in the water.
A way of measuring the optical clarity of the water The tube has a black and white disc at the bottom and a graduated scale up the side. The tube is gradually filled with sample until the disc just disappears. The number on the scale that corresponds to the water level in the tube is read off as the turbidity
Uses a chemical reagent that forms a blue colour in the presence of phosphate The more phosphate the deeper the colour The phosphate checker measures the blue colour and converts that to a phosphate concentration measured in parts per million (ppm) equivalent to milligrams per litre (mg/l)
With these simple instruments we can measure: − the amount of dissolved solids in a sample − the amount of suspended solids in a sample − the amount of phosphate in a sample − the temperature This helps us to identify parts of the river catchment that are producing the highest levels of pollution It also helps us to know what is ‘normal’ and therefore when conditions are different from normal
Total Dissolved solids (mg/l) Water level (m)
The survey form has sections for: SURVEY DETAILS LOCATION, TIME, DATE, OBSERVER NAME ETC. GENERAL ECOSYSTEM OBSERVATIONS LAND USE, BANKSIDE VEGETATION, PROBLEM PLANT SPECIES, WILDLIFE
SIGHTINGS
EVIDENCE OF POLLUTION POLLUTION SOURCES, DIFFUSE POLLUTION, RECENT POLLUTION RIVER CHANNEL OBSERVATIONS CHANNEL DIMENSIONS, FLOW, WATER LEVEL, WATER QUALITY,
SUBSTRATE
NOTES AND PHOTOS NOTES OF ANYTHING UNUSUAL / NOT COVERED BY THE FORM
ONLY THESE ARE COMPULSORY
= SAMPLING POINT
SOURCE OR AREA OF CONCERN = SAMPLING POINT
SUB-CATCHMENTS OR TRIBUTARIES = SAMPLING POINT
= SAMPLING POINT
= SAMPLING POINT
Fill out and send in the paper forms either by post or scan and email
Shortly you will be able to enter data and upload it via the Westcountry CSI website
This will let us all see the data points and photos on a map background along with data values, time series and photos
POLLUTANTS: Nitrate Phosphate Ammonia Polluting organic matter Road runoff ‘Grey’ water Sediment Bacteria – coliforms / e. coli SOURCES: Sewage treatment works CSOs Farm land / farm yards Septic tanks Road drains Urban misconnections Industrial discharges PARAMETERS: Temperature Colour Electrical Conductivity Coloured dissolved organic matter Total Dissolved Solids pH Nitrate Tryptophan Phosphate Optical Brightening Agents Ammonia Redox / ORP Dissolved oxygen Turbidity Suspended Solids