| 551 | An investigation of the Madford River pollution incident of 29 July 1989 : November 1989 |
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| 552 | Devon area internal report - measurement of dissolved oxygen levels in the Dart estuary - March 1996 |
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| 553 | Loe Pool urban waste water treatment directive sensitive area (eutrophic) designation : final draft report |
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| 554 | Phosphorus in the Thames catchment |
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| 555 | River Medway : a user's guide |
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| 556 | A second stage evaluation of the Grant YSI3815 Water Logger |
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| 557 | Mount's Bay and Lands End streams catchment river water quality classification 1991 |
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| 558 | Porth, Gluvian and Menalhyl catchment river water quality classification 1990 |
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| 559 | River Cober catchment river water quality classification 1991 |
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| 560 | River Fal catchment river water quality classification 1990 |
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| 561 | River Fal catchment river water quality classification 1991 |
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| 562 | River Par and Crinnis catchment river water quality classification 1990 |
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| 563 | River Par and Crinnis catchment river water quality classification 1991 |
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| 564 | St Austell River and south Cornwall coastal streams catchment river water quality classification 1990 |
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| 565 | River Cober catchment river water quality classification 1990 |
|---|
| 566 | Quality assurance for phytoplankton data |
|---|
| 567 | Blue-green algal survey of Lower Clicker Quarry |
|---|
| 568 | An investigation of sewage on the beach at Porthcothan |
|---|
| 569 | Assessment of Ivybridge mobile monitoring station and investigation of the water quality of the River Erme and the effect of Ivybridge Sewage Treatment works final effluent |
|---|
| 570 | East Solent Shoreline Management Plan Volume I |
|---|
| 571 | Investigation to assess the compliance of Trelavour Kilns discharge CP7 (SW 9479 5722) with consent conditions and to identify any impact upon water quality in the St Dennis Stream : final draft report |
|---|
| 572 | Pitsea Creek |
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| 573 | Study of ferruginous minewater impacts in Wales : phase 2a determination of remedial options : volume 2 : site reports |
|---|
| 574 | The Test catchment southern : recommendations for statutory water quality objectives |
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| 575 | An assessment of river water quality in the River Kenn |
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