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A flashboard riser, or weir box, is an overflow-type dam commonly used to control the water level in crop irrigation or ponds.

Water flows over the top board or dam of the flashboard riser and is released at a level below the top of the weir. The crest of an overflow spillway on a large dam is often called a weir.

Our flashboard risers are designed with high production, low cost/ maintenance farming operations in mind. Installs easily on existing culverts or new installations can be easily replaced if damaged.

Each standard flashboard riser is painted with lift resistant red primer. Add a safety red paint for high visibility for an additional $20.00.

Since we introduced our flashboard riser design in 2000, few changes have been made to the standard model.

AVAILABLE PRODUCTS

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Flash board Riser fits 12"

Plastic Corrugated Pipe

$182.00

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Flash board Riser fits 12"

Corrugated Steel Pipe

$232.00

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Flash board Riser fits 15"

Plastic Corrugated Pipe

$182.00

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Flash board Riser fits 15"

Corrugated Steel Pipe

$232.00

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Flash board Riser fits 18"

Plastic Corrugated Pipe

$261.00

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Flash board Riser fits 18"

Corrugated Steel Pipe

$232.00

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Flash board Riser fits 24"

Plastic Corrugated Pipe

$247.00

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Flash board Riser fits 24"

Corrugated Steel Pipe

$306.50

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Flash board Riser fits 30"

Plastic Corrugated Pipe

$316.75

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Flash board Riser fits 30"

Corrugated Steel Pipe

$385.25

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Flash board Riser fits 36"

Plastic Corrugated Pipe

$420.25

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Flash board Riser fits 36"

Corrugated Steel Pipe

$498.75

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Flash board Riser fits 42"

Plastic Corrugated Pipe

$774.00

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Flash board Riser fits 42"

Corrugated Steel Pipe

$848.50

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Flash board Riser fits 48"

Plastic Corrugated Pipe

$876.00

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Flash board Riser fits 48"

Corrugated Steel Pipe

$954.50

SPECIAL FEATURES:

  • Built with 12 gauge steel for superior durability
  • Coated with a custom formulated oil based paint for extreme exposure
  • Risers up to 72" tall to fit most standard corrugated culverts are kept in stock
  • Our “no welding required” design forms a collar around the culvert and exerts a strong clamping force by its multiple take up points. This design also allows secure installations on “out of round” or odd size pipe.
  • Accessories available are our “Quick Gate”, “Beaver Guard” and cut to length boards.
  • Our Quick Gate allows bottom drainage without removing the boards and our Beaver Guard protects the top board from beaver damage.
  • Our flashboard risers use standard 2x4" lumber for dam boards, readily available from any lumber company. Or choose to have them included in your order - at an additional cost.
  • The picture shown on the left is a 24" wide x 30" tall flashboard riser fitted to a 15" Steel corrugated culvert with an installed "Quick Gate."
  • As with all our flashboard risers, simply pull up the gate and drain without the need to remove boards.
  • We keep a large inventory of unfinished riser boxes in stock which can be fitted to any steel pipe or plastic culvert.
  • We can fabricate custom designed flashboard risers to suit the needs of our customer.