Koi & Garden Pond Liner Dimensions, Volume & Waterfall Pump GPH Calculator

Size EPDM pond liners, water volume, and waterfall spillway pump GPH.

Required EPDM Pond Liner Size (Length)
20 ft (× 16 ft)
Required Liner Width 16 ft
Estimated Pond Water Volume 1,615.79 gallons
Recommended Waterfall Pump Flow 2,000 GPH
Inputs
ft
Excavated pond length in feet.
ft
Excavated pond width in feet.
ft
Maximum pond depth in feet.
in
Waterfall spillway weir width in inches.
Results & Graph
Required EPDM Pond Liner Size (Length)
20 ft (× 16 ft)
Required Liner Width
16 ft
Estimated Pond Water Volume
1,615.79 gallons
Recommended Waterfall Pump Flow
2,000 GPH

Required EPDM Pond Liner Size (Length)

Graph 1 • Pond Length Ft Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 ft (× 16 ft) 14.0 ft (× 16 ft) 28.1 ft (× 16 ft) 50%: 14 ft (× 16 ft) 14 50% 75%: 17 ft (× 16 ft) 17 75% 100%: 20 ft (× 16 ft) 20 100% 125%: 23 ft (× 16 ft) 23 125% 150%: 26 ft (× 16 ft) 26 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Required EPDM Pond Liner Size (Length) 20 ft (× 16 ft) Required Liner Width 16 ft Estimated Pond Water Volume 1,615.79 gallons Recommended Waterfall Pump Flow 2,000 GPH
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Required EPDM Pond Liner Size (Length)20 ft (× 16 ft)Required Liner Width16 ftEstimated Pond Water Volume1,615.79 gallonsRecommended Waterfall Pump Flow2,000 GPH
Summary: A 12×8 ft pond (3 ft deep) requires a 20 × 16 ft liner (320 sq ft), holds ~1,616 gallons, and needs ~2,000 GPH for the 16" waterfall weir.
Summary: A 12×8 ft pond (3 ft deep) requires a 20 × 16 ft liner (320 sq ft), holds ~1,616 gallons, and needs ~2,000 GPH for the 16" waterfall weir.
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Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: Pond Liner & Pump GPH Formula

LinerLength = PondLength + 2 × MaxDepth + 2
LinerWidth = PondWidth + 2 × MaxDepth + 2
LinerLength = PondLength + 2 × MaxDepth + 2; LinerWidth = PondWidth + 2 × MaxDepth + 2
  • pondLengthFt: Pond Length Ft (ft)
  • pondWidthFt: Pond Width Ft (ft)
  • maxPondDepthFt: Max Pond Depth Ft (ft)
  • waterfallWeirWidthIn: Waterfall Weir Width In (in)

Rounding: Physical package counts round up where appropriate; continuous measurements round to 2 decimal places.

Worked Example: Practical Benchmark: Pond Liner & Pump GPH

Size EPDM pond liners, water volume, and waterfall spillway pump GPH.

  1. Enter your project dimensions, machining speeds, or recipe weights.
  2. Compute the governing equation: LinerLength = PondLength + 2 × MaxDepth + 2; LinerWidth = PondWidth + 2 × MaxDepth + 2.
  3. Review the primary result, supporting dimensions, and 3 SVG visualizations.
Result: Computes Pond Liner & Pump GPH via LinerLength = PondLength + 2 × MaxDepth + 2; LinerWidth = PondWidth + 2 × MaxDepth + 2.

Frequently Asked Questions

How does the Koi & Garden Pond Liner Dimensions, Volume & Waterfall Pump GPH Calculator calculate results?

It evaluates LinerLength = PondLength + 2 × MaxDepth + 2; LinerWidth = PondWidth + 2 × MaxDepth + 2 directly in your browser and plots three custom SVG visualizations.

Can I compare different material dimensions or batch sizes side by side?

Yes. Click "Compare (0/3)" in the results toolbar to pin up to 3 scenarios side by side.

Can I print a clean shop or kitchen reference sheet?

Yes. Click the Print button in the results toolbar for a distraction-free worksheet.

Construction & Home · Landscaping & Outdoor

Koi & Garden Pond Liner Dimensions, Volume & Waterfall Pump GPH Calculator: inputs, method, and how to read the result

Size EPDM pond liners, water volume, and waterfall spillway pump GPH.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Pond Length Ft: Excavated pond length in feet.
  • Pond Width Ft: Excavated pond width in feet.
  • Max Pond Depth Ft: Maximum pond depth in feet.
  • Waterfall Weir Width In: Waterfall spillway weir width in inches.

What the calculation includes

With the default values shown, Required EPDM Pond Liner Size (Length) is 20 ft (× 16 ft). The calculation follows Pond Liner & Pump GPH Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Pond Length Ft from 12 ft to 13 ft changes Required EPDM Pond Liner Size (Length) from 20 ft (× 16 ft) to 21 ft (× 16 ft). This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses standard North American & metric trade dimensions, Machinery’s Handbook formulas, and culinary weight ratios.
  • Verify local municipal building codes, tool manufacturer limits, and food-safety time/temperature tables before execution.

Scope: Trade, Shop & Culinary Science Reference Standard Check the assumptions and limitations against your situation before relying on the estimate.

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