pond with no filteration

[cpm6t]

I am starting to build a pond (3.5 feet deep and about 1500 gallons). Will post pictures of the digging in a couple of week's time.
There is a nearby stream where I can get a supply pipe to the pond. It has water year around, therefore what I'm considering is a constant supply of water from the stream and an outflow from the pond back to the stream.
I think I will not need any filtering due to the constant supply of fresh water. There will be a drain at the bottom when I want to empty the pond to clear up anything left in the bottom (leaves etc).
Any negative aspects of this plan that I am not seeing?
Thanks for inputs.

 

[Chub_by]

Negative aspect #1 would be that is illegal. Also, you can easily get parasites and sicknesses from that water.

 

[cpm6t]

Negative aspect #1 would be that is illegal. Also, you can easily get parasites and sicknesses from that water.

It is not illegal where I am. But if it is illegal somewhere else, it could be a good indication that I should not do that. Assuming the illegal part is "putting it back to the stream" I will find another path to send it outside, in to the ground.

The area of stream I'm going to get water supply from is very fast flowing and at the starting area of the stream. There are no other fish upstream and I guess I'll have to take the chance and see the real threat of parasites.

Thank you for the inputs.

 

[cpm6t]

Okay. The major digging part is done. I've attached few pictures. It will be about 5000 gallons (200 sq.feet and 3.5 feet deep). I'll be finishing the bottom and the side walls with stones and cement.

 

[Drstrangelove]

Assuming the illegal part is "putting it back to the stream" I will find another path to send it outside, in to the ground.

I think this is probably the major issue as otherwise you risk introducing invasive species or and/or tropical diseases. Medications that you might use may also have negative impacts to the environment.

 

[Pole]

Okay. The major digging part is done. I've attached few pictures. It will be about 5000 gallons (200 sq.feet and 3.5 feet deep). I'll be finishing the bottom and the side walls with stones and cement.
View attachment 948471View attachment 948472View attachment 948473View attachment 948474

wat the poster above me said, so to avoid that I would stock native species. Do u know where the stream leads? it might be a major source of a river, so I would be careful.

 

[cpm6t]

Here is an update of the status. The tank walls and bottom is done with stones and cement. Need more work. Moving ahead slowly.

 

[rocky2]

looking good

 

[flowerhornfishman]

yup, it's okay. just make sure tht the stream is not polluted by chemical substances. sometimes people use pesticides in agriculture, and those pesticides can get through to the soil, through the stream and it'll kill your fish. just be careful though.
and would u know tht if u do not cement the bottom, it'll be better. the soil somehow gives a natural healing medicine to the fish, and prevents them from getting infected. i had a trimac once, it was infected by ick. i was told tht if i put it in a mud pond it'll heal naturally. so i did it, and it healed. it still lives from now.

 

[cpm6t]

yup, it's okay. just make sure tht the stream is not polluted by chemical substances. sometimes people use pesticides in agriculture, and those pesticides can get through to the soil, through the stream and it'll kill your fish. just be careful though.
and would u know tht if u do not cement the bottom, it'll be better. the soil somehow gives a natural healing medicine to the fish, and prevents them from getting infected. i had a trimac once, it was infected by ick. i was told tht if i put it in a mud pond it'll heal naturally. so i did it, and it healed. it still lives from now.

The stream starts on top of my land and flows down a steep hill. Nobody access it till it gets out of my land, so I'm clear of chemicals.
I think you are correct about the mud-pond thing. Mine is already cement anyway.
But a general question, how would I know whether a soil bottom will hold water or not? Is that a characteristic of the soil in particular location? Is there a way to figure that out?