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10 × 8 ft pond: gallons, liner and pump
A 10 × 8 ft pond with straight sides, 3.0 ft deep, holds 1,795 US gallons (6,796 litres). Adjust the shape and depth below for your pond.
Volume by depth
| Depth | US gallons | Litres | UK gallons | Oval, same size |
|---|---|---|---|---|
| 2 ft | 1,197 | 4,531 | 997 | 940 (3,558 L) |
| 3 ft | 1,795 | 6,796 | 1,495 | 1,410 (5,338 L) |
| 4 ft | 2,394 | 9,061 | 1,993 | 1,880 (7,117 L) |
What a 10 × 8 ft pond needs at 3.0 ft
| Liner | 18 ft × 16 ft (with 1 ft overlap) |
|---|---|
| Pump — goldfish | 1,795 GPH (6,796 L/h) |
| Pump — koi | 2,693–3,591 GPH (10,194–13,592 L/h) |
| UV clarifier | 24 W goldfish · 36 W koi |
| Fish | 14–29 adult goldfish · up to 7 koi |
| Water weight | 14,980 lb (6,800 kg) |
See the guides to liner sizing and pump sizing, and koi pond depth and volume.
Questions
How many gallons is a 10 × 8 ft pond?
At 3.0 ft deep with straight sides, 1,795 US gallons (6,796 litres, 1,495 UK gallons). An oval pond of the same length and width holds about 79% of that.
What size liner does a 10 × 8 ft pond need?
18 ft × 16 ft for 3.0 ft deep with 1 ft of overlap on each edge.
What size pump for a 10 × 8 ft pond?
About 1,795 GPH (6,796 L/h) of real flow for goldfish, or 2,693–3,591 GPH for koi.