SHAWNEE COUNTY CONSERVATION DISTRICT
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Replacing a Pipe in a Pond

After several years metal principal spillway or draw down pipes installed in pond dams rust or corrode to the point they begin to leak or collapse. Maybe the pond you have never had a draw down pipe. In any case, the new pipe must be installed in a proper manner so it will not fail. In more cases the preferred material is PVC plastic pipe. Consult with your local Natural Resources Conservation Service office or a private engineer to determine proper size and other specific needs in your project.

Below are some key elements that are essential to a successful pipe replacement. It is not necessary to drain the pond to do a pipe replacement.

Please also view Basic Elements Of A Pond to gain a better understanding of pond dams before beginning project. Print page for reference.

Picture
Picture
Step

1. REMOVE OVERBURDEN in at least a 10 foot wide trench down to the old pipe. In addition, a side slope of at least 1.5:1 must be maintained on either side of the trench so soil can later be repacked properly. DO NOT dig a vertical trench to dig out the old pipe or to install a pipe in a pond without a pipe. It will wash out. 
2. COMPLETELY REMOVE OLD PIPE AND COLLARS.  DO NOT attempt to fill the old pipe with concrete. Sometimes a drop inlet style pipe can replaced with a canopy inlet design. Consult with your engineer about the possibility.
3. RECONSTRUCT PAD along trench to match the planned pipe grade. 
4. ANTI-SEEP COLLAR locations are determined. Soil is excavated to accommodate collars.
5. NEW PIPE is placed in the trench, anti-seep collars attached and pipe is assembled. 
6. SOIL IS MANUALLY TAMPED around and along the full length of the pipe to at least 2 foot of depth over pipe. Also, hand tamp around the anti-seep collars.
7. ANTI-SEEP COLLAR prevents water from seeping down the outside of the pipe which could wash out the pipe.
8. FILL remainder of the area in 6 inch lifts and compact until the pond dam is fully restored in size. 
9. SEED dam as soon as possible, preferably before the first rain. Mulch if possible.
Other related pages.
  • Basic Elements Of A Pond
  • Maintaining A Pond
  • Picture Gallery
  • Pond Dams Built Right
  • Pond Problems
  • Sealing A Leaky Pond
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  • About Us
    • Conservation Priorities
    • History
  • Contact Us
  • Equipment
    • No-Till Drill >
      • Drill Documents
      • Seed Photos and Information
  • Contractors
  • Partners
    • Other Agencies
  • Natural Resources
    • Conservation Balance
    • Natural Resources
    • Non Point Source Pollution >
      • Non Point Source Pollution
      • Plugging Abandoned Water Wells
      • Septic System Maintenance Links
      • Septic Tank Maintenance
    • Soil >
      • Soil Basics
      • Soil Ecosystem
      • Soil pH
      • Soil Testing
    • Cover Crops
    • Livestock Water
    • Preventing Urban Water Pollution
    • Air Quality
    • Ponds - Construction, Problems, Repair >
      • Basic Elements of a Pond Dam (Drawings and Text Version)
      • Pond Dams Build Right - Pictorial Version
      • Pond Management
      • Pond Maintenance
      • Replacing A Pond Pipe
      • Sealing A Leaky Pond
  • Education
    • Country Living Considerations >
      • Country Living
      • Essential Check List
    • Cropland Planting Resources
    • Caucasian Bluestem
    • Envirothon
    • History & Environmental Fair
    • Lake Shawnee
    • Nature's Code of Ethics
    • Topeka Water Festival
    • Top 9 BMPS for Nutrient Management
    • Top 10 Problem Weeds
    • Videos >
      • Student Videos
      • Student - More Info - Turbidity Test Expanded
      • Student - More Info - Properties of Water Expanded
      • Student - More Info - Soils
    • Photos >
      • Conservation Practice Photo Gallery
      • Livestock Agriculture Photos
      • Pond Photos
      • Prescribed Burning Photos
      • Rural Agriculture Photos
      • Urban Conservation Photos
    • Key Conservation Practices
    • Newsletters
  • Fin. Assistance
    • WRAPS
  • Events
    • District Annual Meeting
  • Awards
    • 2020 Grassland Award
    • 2020 Soil Conservation Awards