Footleg said: > what difference in water > levels could be expected between the upstream and downstream ends of > the sump?
and Wookey responded: > This is a question for hydrologists, not cave surveyors :-) Wookey is wrong. Without the data from survey and from geodesics the hydrologist would have no way of knowing the facts of this. In science, observation comes first :-) Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803)
