Build a Pond

Build a pond with these tips and advice on topography, water sources and more.
By George DeVault
April/May 2006
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Ponds add scenic beauty to a property and provide opportunities for boating, swimming and fishing. There also are many practical uses for a pond — livestock watering, crop irrigation, fish production, wildlife habitat and as an emergency source of water for fighting fires.
PHOTO: DAVID CAVAGNARO
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One of the first things many people say when looking out over a few acres is, “I wish I had a pond.” Ponds add scenic beauty to a property and provide opportunities for boating, swimming and fishing. There also are many practical uses for a pond — livestock watering, crop irrigation, fish production, wildlife habitat and as an emergency source of water for fighting fires.

In 1956, when my parents bought 15 acres in the country, the first thing they did was build a pond. Actually, Mom and Dad didn’t build it themselves; they hired a man with a bulldozer. The huge, yellow machine quickly scooped out a natural depression along an old fence row. Soil was piled thick and high at the lower end of the slope to form a modest earthen dam. When the rains came, the hole began filling with water. That was three years after legendary homesteaders Helen and Scott Nearing started enlarging a spring to build a pond at their new homestead in coastal Maine. True to form, the Nearings did most of the work themselves — by hand. For more than 25 years the Nearings continued to expand their pond, steadily deepening and enlarging it.

Ponds, like their owners, come in an endless variety of shapes and sizes. But each one is “a spot of beauty, a sparkling universe teeming with life,” Louis Bromfield wrote in his 1948 book, Malabar Farm. “For the children they are a source of inexhaustible delight. And like the fishponds of the abbeys and castles of medieval Europe and the Dark Ages, when all the world fell apart in anarchy and disorder, they provide not only food for the table but peace for the soul and an understanding of man’s relationship to the universe.”

Siting and Planning a Pond

Here are the main factors to evaluate before building your own pond.

Topography. As in real estate, there are three secrets to success with ponds — location, location, location. Water runs downhill, and a pond simply collects and stores water. It is the most basic form of a reservoir. Locate your pond where the largest storage volume can be obtained with the least amount of earth moving.

There are two basic ways to create a pond — digging a hole or building a dam. Usually, the form is implicit in the site — to dam or to dig — and the land reveals the answer, says Tim Matson, author of Earth Ponds.

The ideal site for a dammed pond is a wet hollow located between two steep adjacent banks, Matson says. “On flat terrain, where the water table is close to the surface, or where a nearby stream or well can be directed to fill it, a dugout pond works best,” he says. Deeply excavated ponds with a smaller surface area are recommended in arid areas where evaporation losses are high and rain is scarce. But often the answer is a combination of methods, a dug-and-dammed pond. Matson says this strategy is “most favored in rolling terrain, where excavation of the pond basin will yield enough earth for the embankment.”

Soil Types. Deep, well-drained soil with lots of sand and gravel may be great for farming, but it is lousy for ponds because it doesn’t hold water well. Heavier clay soil, on the other hand, holds water much better and is perfect for ponds.

You can learn about your soil with free help from your county Extension office or district office of the Natural Resources Conservation Service. (Look in the government section of your phone book.) Experts there can recommend excavation contractors; explain laws governing pond-building; and give advice on siting, building, managing and stocking your pond. Also, be sure to ask if they can help you get a free copy of an excellent resource, Ponds — Planning, Design, Construction, handbook No. 590 from the U.S. Department of Agriculture (USDA). The water-holding capacity of less-than-perfect soil can easily be increased by compacting the soil with heavy equipment, adding clay blankets, using sealers such as bentonite (a fine-textured colloidal clay) or using chemical dispersing agents that include sodium chloride (table salt) and soda ash. Some small ponds can be lined with heavy plastic or rubber sheets.

Water Sources. Your geographic location, the source of your water (surface runoff, a spring, a stream or a well and pump) and its reliability will largely determine the size and depth of your pond. For example, ponds in wet and humid Eastern, Southern and Pacific Northwestern states can be relatively shallow — 5 to 7 feet deep — according to the USDA. In the dry to arid regions of the West and Southwest, the minimum recommended depth is 8 to 14 feet.

For ponds that depend solely on surface runoff, the size of the watershed drainage area surrounding the pond is a critical factor. To fill a one-acre pond in Ohio to a depth of 5 feet, you may only need a watershed of 15 acres, according to the USDA. In western Kansas, though, it may take 175 acres to provide enough water; in arid Western states it may take 300 to 500 acres.

Costs. Unless you pull a Nearing and dig your pond by hand, hiring a bulldozer to build even a modest pond will cost $3,000 to $5,000. Sometimes government agencies will share the cost through watershed restoration and conservation projects — ask about local programs. Just be aware of any strings attached, such as a requirement that your pond be kept open to the public.

Legal Issues. In the past, property owners could dig a pond anywhere on their land, and many people constructed ponds in wetland areas — low-lying spots that already collected water. But more recently, the public has realized the value of wetlands for wildlife habitat and maintaining water quality, so there now are regulations that limit where you can put a farm pond.

If you construct a pond without acquiring the proper permits, you could find yourself in court, faced with heavy fines and huge wetland-restoration bills — and worse yet, no pond. You can avoid this issue by choosing a pond site with care and following local regulations.

Matson says the ideal pond is one that already exists and is “maybe 20 to 30 years old and just needs to be cleaned out.” If you have an old pond site on your property, it’s well worth taking the trouble to clean it up, rather than negotiating permits and incurring the expense for a new one. (See “New Life for Old Ponds” later in this article for more on resurrecting an old pond.)

Maintenance. Keep your pond surrounded by large grassy areas to prevent soil from washing into the pond from nearby fields. Also keep in mind that the ponds own water can cause soil erosion. Wind-whipped waves can eat away at a ponds banks, dam and spillway. Common solutions include breaking up waves with an obstacle such as a floating log boom, or building rock-lined banks — called riprap — which work well where the water level fluctuates widely. Keep livestock out of your pond as much as possible, both to prevent erosion and to maintain water quality.

Safety Concerns. It’s important to exercise caution while enjoying a pond. Anyone — especially young children — can drown in a pond or get caught in a whirlpool, which can form at the ponds drainpipe. Diving into shallow water can lead to serious injury. Exercise additional caution if you want to use the pond in winter — people can break through if the ice is too thin. Make sure all family members and visitors know, and follow, proper safety procedures. Keep basic lifesaving devices handy, including ring buoys, ropes and poles, or long planks and ladders for ice rescues. If your pond will be open to the public, make sure you have adequate liability insurance. To keep the public out, some pond owners opt to fence their ponds and/or post No Trespassing signs.

Build for the Future. Given the increasing trend of severe weather, Matson says ponds need to be built better than ever. The construction of pond dams must take into consideration potential flood damage should the dam or overflow-spillway channel fail. “It is even more important to build ponds with spillways that can handle what they used to call 50- or 100-year floods,” Matson says. With continuing climate changes, you really want to make the dams sturdy and make spillways function properly with large water loads.

Build a Pond: Safety and Self-Reliance

Rural fire departments count on ponds in the same way urban firefighters depend on fire hydrants. Getting a pumper truck close enough to a pond is often a problem, especially in bad weather, so many pond owners install a dry hydrant, a 4- to 6-inch-diameter plastic sewer pipe, to provide a quick and reliable hose connection. “Have a conversation with your local fire department,” Matson says. “There may be some financial support from the state, or a tax or insurance break [to help with the cost of building or improving a pond].”

Ponds have long been considered an essential tool for country living, enhancing a self-reliant lifestyle. “A pond is a wonderful combination of things, incorporating many aspects of self-sufficiency, starting with your own food and water,” Matson says.

Ponds also can be useful resources during blackouts or other emergencies: Buckets of water from the pond can be used to flush toilets; and if the ponds water is clear and clean, it can be used for bathing. If you decide to build a pond, the resources listed at the end of this article will give you a better understanding of the siting, planning and building factors necessary to create your own special spot.


New Life for Old Ponds

“Earth ponds flow naturally toward oblivion,” says pond expert Tim Matson. “Vegetation decays, sediment accumulates and the basin erodes. Eventually, without help, the pond disappears.”

Nevertheless, it is possible to revitalize an old pond. Take, for example, the experience of Keith Crotz, a now proactive pond-keeper in central Illinois. The pond on his farm was 24 feet deep when his late grandfather, William, built it for fishing in 1962. Thirty-five years later, the one-acre pond was practically dead. “The pond had pretty much filled in because of poor farming practices,” Keith says. “The silt came off of our land, which was plowed, disked and harrowed, regardless of the weather. In 1997, we dredged out about 20 feet of silt, rebuilt the dike and put in a new drain and overflow.”

Crotz still raises corn, soybeans and wheat on the farm that has been in his family since the 1860s, but he no longer worries about soil erosion filling his pond. “Now that we’re no-till and organic, we don’t have those problems.” A 100-foot-wide grass buffer also encircles his pond. The U.S. Department of Agriculture picked up most of the cost for reviving the pond as part of a watershed-protection program; Crotz had to pay for only 20 percent of the project’s total cost.

Now the reborn pond is full of bass, bluegill and bullfrogs, and attracts a variety of other wildlife. With an electric pump, the pond keeps a livestock water tank filled and provides plenty of irrigation water for a one-acre market garden.


Build a Pond Resources

Books

Ponds - Planning, Design, Construction
Agriculture Handbook No. 590, available free from the USDA Natural Resources Conservation Service.

Earth Ponds: The Country Pond Maker’s Guide to Building, Maintenance and Restoration
By Tim Matson

Earth Ponds Sourcebook: The Pond Owner’s Manual and Resource Guide
By Tim Matson

Websites

Ohio Department of Natural Resources

Virginia Cooperative Extension

Earthponds.com
Tim Matson’s Web site.

Video

Tim Matson’s Earth Ponds Video
An introduction to pond design and construction.


George DeVault grew up beside a half-acre farm pond in Ohio. There he enjoyed fishing, boating, ice skating, hunting frogs and, when his parents weren’t looking, skinny dipping.


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Post a comment below.

 

lauralouise90
3/7/2014 10:18:57 AM
Anyone able to offer a bit of advice? I've just started to build my own pond - i'd like to have fish in it too but I've been told that I need a pond pump (like the ones here -http://www.shirleyaquatics.co.uk/product-list.cfm?theCatID=206) Does anyone have any knowledge of pumps and which are the best?

Danny
10/31/2012 11:34:27 PM
i have 6 acres and want a pond. atleast 3/4 Heeeeelllllppppp

Steve_9
12/14/2008 3:47:52 PM
Hello, Looking for some advice and hoping you can help me or refer me a site that can. I recently moved into a home that has about a .5 acre pond towards the back of the property. The dam had been washed out in one corner therefore decreasing the the depth of the pond by about 4 feet. We used about 8 loads of clay to repair the area and packed it down sufficiently. The dam is about 150' long. After we did the repairs we installed 2 12" culverts side by side about 6" below the top of the dam to provide for the overflow when the rains began. Beginning yesterday we experienced record rainfalls. The water began to flow over the dam and eventually took out one of the culverts thereby washing out the spot the culvert was in. Obviously the culverts are too small. Is there a formula that is used to provide for the correct size of the culverts and overflow? Can anyone help me? Steve








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