Mon 20 Oct 1817
From John R Denyer
To J S Salt
London
Water in summit level decreasing very fast. Action being taken to find out which length most defective. Length from Coates-field round House to Daneway Lock maintained its level proving Tunnel tolerably water tight. Principal leakage appears to be between Bridge No XXVI & Bridge No XXIX. Repairs needed early next spring. Water at present very low in brooks and springs. Hope levels will soon increase as there are orders for considerable quantities of Coal to go down Thames.