To learn about pond building, get one of many available books on the topic. I don't know of any book that focuses on turtles. However, a book that includes fish in its pond designs is suitable. There are many options on how to build your pond, and most are suitable for turtles. An easy way to get a pond is to buy one of the pre-fabricated pond shells. However, they limit the shape of your pond and might not be suitable for turtles. Plastic liner can be torn by large turtles. If you use plastic liner, make sure it is high-grade. Concrete is suitable only if covered with dirt and rocks. I have been told about using a combine technique of a plastic liner with a flexible mortar covering. This sounds like a good solution, if you can afford to do it. Make note of the following when designing your pond: If you are planning to hibernate your turtles, the pond must be deep enough for the water at the bottom to remain liquid. See Outdoor Hibernation for Water Turtles. Unless the pond is huge, it is recommended that you install a pond filter if there are turtles in the pond. Otherwise the water will get too dirty. Alternatively, you could do regular water changes or have continuous flow of water through the pond. Also, if the pond is huge, a filter won't be necessary. Note that the turtles will munch on most any plants, and they will chase the fish. However, I have my Reeves turtles co-exist peacefully with goldfish (the fish got smart and the turtle gave up). If you put enough plants into the pond, they will grow faster than they get eaten. You can also put some plants into pots so that the turtles can't get at them. The turtles need a way to get out of the water an bask. The best way is to build an island in the middle. This will keep them save, and they cannot escape. To keep your turtles from escaping and wandering, choose a pond with vertical rims and build the island in the center. Alternatively, allow the turtles to leave the pond and fence the surrounding area; the fence should reach at least 1 foot/30cm into the ground, since turtles like to dig. If you predators visiting your yard, the best way to protect your turtles is a pond with vertical sides, at least 3 feet/90cm deep, with an island in the middle, out of reach of a predator. Don't plant too many plants to discourage wading. You can cover the whole pond with netting, but that will reduce the attractiveness of the setup. Accept that you will occasionally lose a turtle to predation if you have an outdoor setup. Put some rocks/hiding place in the bottom of the pond to help your turtle escape from predators. Reader tip from chongfam@gte.net: "Here's a good idea for one: dig a small pond, and line it with two or three layers of plastic. The top layer must be of white or gray plastic, so the water doesn't get too hot during the noonday sun." Another reader asks: Q: "I am wondering what to do with my turtles for the summer. My pond does not have any fencing. Is there any chance they would stay in the pond?" A: If the turtles can climb out to the surrounding yard, there is a good chance they will do so. Whether they'll stay around the pond or not depends on the turtle. No predictions here. Q: "If I keep my turtles in a tank for another year, would that make them more apt to stick around?" A: No. Q: "A Heron ate the big fish in the pond. Would he eat my turtles too?" A: He might try, depending on how big the turtles are. Racoons, too, love to catch and eat turtles. They are actually the greater menace. Q: "Would it make a difference if I put enough plants in the pond first." A: Yes, plants and hiding places, like a few stacked bricks or rocks, really help. An effective, but not quite sightly solution, is to cover the pond with chicken wire. The turtles will also eat the frogs and fish if they can catch them. I have goldfish in my turtle pond. I put in about 40, and now I have about 10 healthy, fat fish. Those were the smart ones. The stupid ones got eaten. I bought feeder fish to spare my wallet. Q: "Also, since the one of my turtles is such an herbivore, would he devour the plants faster than they can grow? The last plant I put in his tank lasted 2 days. Any other suggestions?" A: Yes, they will eat the plants. Especially the hyacinths. I actually grow hyacinths, just for the turtles. I grow them in a separate tub, then give them to the turtles as they overflow the tub. That way I always have a healthy supply. Since I currently don't have a racoon proof pond, I have an outdoor day enclosure for my box turtle; with a cover. When the weather is nice, I put him out in the morning and take him in at night. One of my water turtles has a small pond in the atrium, where the racoons can't get in. Once I build my new outdoor pond, I'll probably put in lots of plants, make the outside rim very steep, and put an island in the middle for the turtles. That's the safest to be done, unless one covers the pond with chicken wire. Q: "Do I need to feed the turtles in the pond?" A: Depends. In a large, diverse pond may only need to supplement with extra food a bit, especially in the beginning, until the pond is established. In a small pond, you'll have to feed the turtles extra. Don't overfeed! Q: Can my turtle stay out of the water? What's a good place for a pond? How warm can the water get? How do I cool a pond? A: Your turtle can certainly stay out of the water for 15 minutes of more. She may blink her eyes because they get dry, or because she is getting sleepy and ready to fall asleep. Make sure she has shade available. The best position for the pool is under some bushes or trees with partial sun only, especially in mid-summer when it gets really hot. I keep my pond in a place where it gets some full sun, some partial sun, and some shade. I was worried, too, when I saw the temperature of the water rise to 93 last week. First I simply covered the pool with a large piece of cardboard during midday. Then I saw my turtle out basking in the full sun! The temperature there was positively over a hundred. Also, all the goldfish didn't mind the warm water. So, now I just let nature do what it does, since I was too worried. My turtle is a Reeves turtle which is native to SE Asia. However, I would put the limit for the water temperature at about 100. Don't run cold water into a hot pond. I suggest you move the pond into partial shade or put a cover on it during the hottest parts of the day. This is true no matter what species of turtle you have.