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Archive Reference / Library Class No.	D3040/LW/1/76
Title	Isohyetal Plans for Reservoirs, showing lines of equal annual/seasonal rainfall, drainage areas and position of rain gauges, made monthly
Date	1934-1971
Level	Series
Repository	Derbyshire Record Office
Archive Creator	Derwent Valley Water Board
Archive Creator	Severn Trent Water Authority

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