The Shing Mun Reservoir (Jubilee) Dam. The total storage capacity of Shing Mun Reservoir is 2,921 million gallons which is the biggest in the Colony at the time.城門水塘(又名銀禧水塘)的主壩。城門水塘的總容水量為2,921百萬加侖，是本港現時最大的水塘。