Pond Boss Forums GENERAL QUESTIONS Help Precipitation rates?

Tums, that's the problem. I don't have it under ground. My well produces a whopping 1/10 gpm. It runs into a 2,5000 gallon holding tank so I never run out of water for the house.

Tums do you mean that the vegetation will draw the water on the soil when it rains or the vegetation will draw the water that's in the pond all the time? I mean are you worrying about that the vegetation will block watershed or the vegetation will steal the pond water directly? I hope i am clear.

Do you also mean trees by "vegetation"? Because i want trees everywhere.

I see, I wondered if that was your problem.

Vegatation (including trees) pull moisture from the ground. If the pond is not 100% leak proof moisture will transfer from the water in the pond into the ground. Any vegetation at the waters edge will draw almost directly from the pond. Also the vegetation will prevent watershed from ever reaching the pond. In the end all vegetation around the pond means is you will need more water supply for both the pond and the vegetation.

Tums, that's a horrible news . I guess i need to use liner to make my pond water proof. Do you people use liner for that big of a pond or just clay? I think clay won't be enough to keep water from plants. I guess i should choose some trees that can live in droughty places.

Most people here in the USA use clay for lining ponds. Yes, it will seep a little, but here usually the precipitation will make up for the seepage.

With a liner, you have to remove all the rocks and pointy things that are under it, and put down a padding so it won't get poked. How will you ensure that it won't have a hole in it? If you want to put a dock/pier on the pond, it will have to be a floating one. You'll also probably need to install a drain in the lowest part of the pond if you plan to remove any muck/sludge that enters the pond. (leaves,cust, fish food, etc all decompose on the bottom).

Don't forget that if the pond is 100% water tight, and you have a high evaporation rate, over the years the water will be the only thing evaporating, and without periodic flushing, all the dissolved minerals and salts in the water will be left behind.

Do a Google search about the Salton Sea. Granted that's an extreme case, but that's what I'm talking about.

Esshup, i know i need to use clay but i was thinking to use a liner , just to have a better isolation but it seems like it's not worth that.

I know what you saying about evaporation thing( I have aquariums ) . I am sure i need to drain some water periodically. The way i am planning to do this is , when i need water for my plants around my house and pond, i will get the water from the pond instead of well.

I wonder how terribly , the plants around my pond will drain the water in the pond? I mean if they will drain as much as they need to live, that's fine. Because i will need to water my plants anyway. But if they drain more than they need, that's gonna be a problem.

If you don't have plants that suck up a lot of water (those plants like to live in moist to wet conditions, i.e. have their "feet" wet), then I wouldn't worry about the plants using too much water from the pond.

For instance, the figure around here is that a grass lawn needs 1" of water per week, but it can get by with less.

I get it esshup. Thank you .

No It's wrong you'll have to add 600 liter to be back at the original 1000liter

You gain 600 litre thru anual precipitation :

http://web.ead.anl.gov/resrad/datacoll/water.htm cut/paste quote: PRECIPITATION RATE

9.1 DEFINITION

The precipitation rate, Pr, is the average volume of water in the form of rain, snow, hail, or sleet that falls per unit of area and per unit of time at the site. It is measured in units of volume per area per time

Quote end.

And you loose 1200 litre thru anual evaporation : http://www.waterandclimatechange.eu/evaporation
cut/paste Quote:
Evaporation is an important process in the global water cycle. Solar radiation hits the surface of water or land and causes water to change state from a liquid to a gas.

Quote end

Remember you are on a US forum so when you do the mats don't mix mm kg and litre m3 in a equation and ask iff it's right is my 2c or 2 øre (or 0,02 LIRA)

cheers

Hey Ande, where have you been?

Hi DD1
I'w been lurking now and then, picked up the old laptop to log on(embeded password) today.
Still strugling a bit to adjust passion, in acordance with my capabillities,werry reduced do to lymes, so I'w turned towards aquaponics wich is at a more macro level.
I'm on the right track but still expect years to recover (if ever?)

cheers

Paul, I've known several people with Lymes and other afflictions of that type. It does take time.

However, it is always a pleasure to hear from you.

+1

Glad you're seeing some improvement. Best of luck for continued forward progress!

Just saw a map on the WGN weather blog that showed a large part of the country is still technically under drought conditions whether it be rain or snow. Sure hope we snap out of this!

Thanks sir. I don't know, how i made such a stupid calculation. You are right...