EA Site Data Request Information for Water Framework Directive Phosphate/Ammonia Values.
For those of you who are taking part in the Angling Trust - Water Quality Monitoring Network and would like to obtain WFD target values as comparisons for your own readings then the information below may be helpful. This is by no means a complete list of all of the water bodies within the Loddon catchment but those probably being monitored by individuals or angling clubs.
You will need to supply information on the the stretch of river relative to your monitoring point from the list below, eg. (GB************), along with the main EA monitoring point (PLDR****), closest to your WQMN sample point. Remember, Phosphate & Ammonia levels are site specific based on the Altitude & Alkalinity of that stretch.
It would be useful to include a grid reference/map coordinate e.g SU???? ???? or 51.69875,-0.95365 for each of your WQMN monitoring points to aid in the information request for WFD Target Values for Phophate and Ammonia (If you checking for this). Remember there is no standards for Nitrates in rivers, only stillwaters!!!
Loddon – Swallowfield To River Thames Confluence – GB106039023160
LODDON AT LODDON DRIVE, WARGRAVE - PLDR0032, LODDON AT A4 ROAD BRIDGE, TWYFORD, BERKS - PLDR0029
Loddon – Sherfield-on-Loddon To Swallowfield – GB106039017330
LODDON ABOVE BLACKWATER AT KINGS BRIDGE - PLDR0028
Loddon – Hartley Wespall To Sherfield on Loddon – GB106039017150
LODDON AT LONG BRIDGE, SHERFIELD - PLDR0033
Loddon - Basingstoke to River Lyde confluence at Hartley Wespall – GB106039017080
LODDON AT KEEPERS COTTAGE, WILDMOOR – PLDR0073, LODDON AT BASING LODGE FARM, BASING - PLDR0096, LODDON AT PYOTS BRIDGE, BASING - PLDR0034
Lyde – GB106039017100
LYDE AT DEANLAND FARM - PLDR0039
Blackwater – Bramshill to River Loddon Confluence, Swallowfield – GB106039017320
BLACKWATER AT GAUGING STATION, SWALLOWFIELD – PLDR0010, BLACKWATER ABOVE WHITEWATER – PLDR0007
Blackwater – Hawley to Whitewater Confluence, Bramshill – GB106039017290
BLACKWATER BELOW SANDHURST STW – PLDR0012, BLACKWATER AT A30 ROADBRIDGE, BLACKWATER – PLDR0135, BLACKWATER ABOVE CAMBERLEY S/W – PLDR0004
Blackwater – Aldershot to Cove Brook, Hawley – GB106039017180
BLACKWATER AT COLEFORD BRIDGE – PLDR0008, BLACKWATER AT LYNCHFORD BRIDGE, ASH VALE – PLDR0011, BLACKWATER ABOVE ALDERSHOT MILITARY S/W – PLDR0002, BLACKWATER ABOVE ALDERSHOT TOWN SOUTH STW – PLDR0003, BLACKWATER AT PEA BRIDGE, BADSHOT LEA - PLDR0162
Cove Brook – GB106039017130
COVE BROOK ABOVE BLACKWATER – PLDR0013
Whitewater – GB106039017240
WHITEWATER ABOVE BLACKWATER – PLDR0045, WHITEWATER AT HECKFIELD – PLDR0048, WHITEWATER AT DIPLEY – PLDR0047, WHITEWATER AT DEPTFORD BRIDGE, GREYWELL – PLDR0046
Hanna Phosphate Colorimeter :
Reading will be given for Phosphate = Phosphorous + anything else.
To compare your Hanna Colorimeter readings with WFD status multiply the Colorimeter reading by the constant 0.3261. This will give you a value in terms of Phosphorous (which the EA data relates to), rather than Phosphate.
Please notice that WFD classifications are calculated using annual mean concentrations of 3 years of data, with a minimum of samples per year required.
River |
Catchment |
Site |
High/Good |
Good/Moderate |
Moderate/Poor |
Poor/Bad |
Blackwater |
Blackwater (Bramshill to River Loddon confluence at Swallowfield) (GB106039017320) |
PLDR0010 |
0.038 |
0.071 |
0.178 |
1.015 |
Loddon |
Loddon (Sherfield on Loddon to Swallowfield) (GB106039017330) |
PLDR0028 |
0.046 |
0.085 |
0.203 |
1.072 |
The table above shows the type of data you should receive but relative to the site you requested. If you requested the data for ammonia as well, then this should be included.
This email address was used to obtain information on the WFD target values for the stretches of rivers listed.email -