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Nelson's Waterfall Spillway

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  • This spillway can easily create a pond waterfall or stream.
  • Both spillway sizes have a 1" FPT Bulkhead located in the back of the unit.
  • Reservoir can be filled with biological filter media to grow beneficial bacteria.
  • Rugged construction allows this spillway to be camouflaged easily with rocks.
  • Lifetime manufacturer's warranty and made in the USA!

$58.50 - $79.25

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Nelson's Waterfall Spillway is an excellent option for easily installing a spillway in your water garden. Sturdy and durable, this unit is easy to conceal with rocks or foliage to create an effective and natural looking waterfall. It also can be used to make a disappearing stream.

Both models have a 1 inch FPT bulkhead water inlet located in the center of the back. The 9.5" spillway accepts 3/4" ID hose with the included fitting whereas the 15.25" spillway accepts 1" ID hose with included fitting. The spillway lip extends out about 4 inches from the front.

Features a lifetime manufacturer's warranty.

Made in the USA. 

Available Sizes & Specs:

9.5" Wide Spillway

  • Internal Dimensions: Approx. 12" square x 5" deep
  • Bulkhead: 1" FPT
  • Barb Elbow: 3/4"


15.25" Wide Spillway 

  • Internal Dimensions: Approx. 16" square x 5" deep
  • Bulkhead: 1" FPT
  • Barb Elbow: 1"
  • 5
    Pitched weir works great!

    Posted by Andrea on Aug 17th 2021

    We used to use a flat lipped waterfall box, but after time it stopped flowing properly. A stiff wind would cause it to flow backwards. This box by Nelson's has NO issue with wind, flows calmly and perfectly. The pitch to the lip helps significantly. Nice width and depth box for planting or putting additional filter media in. Highly recommend if you're having trouble with flat waterfall outlet boxes.v

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