Evaporation.

[nohandles]

My new pond has 288 sq feet of top surface with a falls sending 10500 gpm per hour almost always in sun. I thought I may have punctured the liner but I can't find any wet spots anywhere around the pond? Could it be evoporation? Never had one with this much sun on it. I'm planning to brang in a couple of good size shade trees but until then is it my new combo sq feet/ falls?

 

[HTH]

If it is evaporation you will have more during the day when it is hot.

Water falls are the #1 place to have water leaks.

I would turn off the falls and see if the water loss seems what you would expect from evaporation. If so you know the pond is not leaking and the falls is either leaking or evaporating the excess water.

 

[crsublette]

Judging your pond's evaporation can be a bit nerve racking, at least was for me after my first year.

After I got everything done, I was losing an inch of water every day!! My pond has a fountain and waterfall. Of course, that first year we were having constant 100~110*F, crazy winds, near zero humidity, near zero dew point, and it was like this until October, when it finally cooled down. Once the weather cooled down, my water was staying level and steady for days. So, this experience really taught me what the evaporation rate is in my area.

If this is your first pond, then you might still be learning what your evaporation rate actually is in your area.

Other than that and what Howard has suggested, I really don't know what else to do. You could just let the water level to continue to drop, and, if the water level appears to stop at a certain level, then that might be where the leak is located somewhere at that particular water line.

 

[nohandles]

The way the pond is designed the liner from the pond goes into the falls area all in one piece. The falls flows off in a dog leg so it can be viewed from our dinning room of our patio. This pond is the first one with this much sun exposure ponds have been a long time hobbie for me this being the 20 one I've built.
Time to go look at some trees to plant for shade.

 

[nohandles]

I talked to my neighbor today and told me he had filled his 36 dia pool 4 times in the last 4 weeks I thinks its all evap here. Today I hung screne over the whole pond the pond is much more shaded now and cooler under the pavelian. On another note I got 2 nice 15 in butterflys koi that a friend gave me. 17 years I gave hime 80 kio from my old pond these are the off spring from mine and a mated pair the orange black and white it with child. Really cool to watch them swim in the pond. Love dat pond wish summer wouldn't end!

 

[crsublette]

Very nice man!! :beerchug:

 

[nohandles]

Yesterday I put up a 28 x 28 pond net over the pond it hangs from the gutters over to the pavellian. I used hangers meant for Chistmas lights it worked out very well. Still lost a 1/2 over night but it seamed to help a lot plus the black reflects the light so the pond is at somewhat shaded Cool. It seems cooler sitting by the pond now.