Great Western Railway
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Monmouthshire and Brecon Canals (Canal Numbers 95 and 95A)
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Water supply to the canal
BW157/9/9/13
"Reservoirs (Safety Provisions) Act, 1930. Prescribed form of record relating to a Reservoir [Penyvan near Aberbeeg]"
Details include: water levels; average rainfall; structural character of dam or walls. Book No 1 1933-1945.
BW157/9/9/13
1 volume