1 | The Nidd and Wharfe catchment (river factfiles) |
2 | Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996 |
3 | The Swale, Ure and Ouse catchment (river factfiles) |
4 | Macroinvertebrates of the River Nar : Great Ouse catchment : draft report |