Location is Western Washington. We inherited a pond recently and are trying to determine how to "fix it". There are no fish, but does support a large number of frogs (which we like).
Any suggestions would be appreciated. In particular I was thinking of purchasing an aeration system. Heavy equipment is not an option, digging it out by hand would be close to impossible
Description is below. Thank you for taking the time to read my rather lengthy post. Bob
The pond is in a natural ravine which the previous owner built a 20+ foot high dam. The pond is roughly 100 feet long 25 feet wide, depth from zero feet on one end to 15 feet at the other end.
During the summer a small stream feeds it which trickles over the dam on the other end. In the winter it turns to a full on stream with white water over the damn. It was surrounded by large amount of bamboo (which we have removed), a bunch of bushes and quite a few maples and alders (which I am removing quite a few).
The water is a very brown, maybe 2 feet visibility, with no vegetation in or on it. If I take a stick and jam in into the pond (anywhere in any location), it hits "mud" after a few feet, which promptly release a large amount of gas. If I look at some of the "sludge" it is mostly black muck mixed with leaves (especially the bamboo leaves).
What's your goals with the pond? In Washington I would think it's Not quite deep enough to support fish over winter.. And the depth needed I'm not sure is reachable by aeration alone.. Some pics would be cool..
I believe in catch and release. I catch then release to the grease..
Proper aeration will get oxygen down to the bottom allowing beneficial aerobic bacteria to naturally eat up that bottom muck and the circulation will get rid of the gas build up. Since it is long and narrow I would recomend a two diffuser system. Once you get the water healthy, I don't see why you couldn't have a perfectly healthy fish population.
A lot of the sediment could be brought in by the stream. Is there any way to dig a settlement pond further upstream to trap any dirt that would be washing into the pond?
You're doing good to remove the bamboo and thinning out the trees.
Regarding trees on the dam, remove any that are 4" DBH and under. Any larger than that, you'll have to leave there and hope they live for a long, long time. With that much water going thru the pond during the winter, any weak spots in teh dam would be quickly washed out (like a rotted tree root).
The bacteria will eata way at the muck, but they need O2 to do their work. That's the reason for the aeration system.
As was said before, what are your goals for the pond?
Lets try to define the goals a bit. In a year, what do you wan to be doing with the pond? Fishing (if so, what kind of fish), swimming, wildlife viewing, ??
The water that is entering the pond, where is it coming from (i.e. what is it running thru amd collecting before it gets to your pond)?
Ina year I would like to have a less smelly more clear pond. Possibly some fish. Mostly it is a nice feature of the landscape.
We are located at the bottom of an old river bed/valley. Apparently a mile away there is a small spring, but a lot of water collects from the surrounding valley. When it rains it increases the flow a lot!
Bob
Originally Posted By: esshup
Lets try to define the goals a bit. In a year, what do you wan to be doing with the pond? Fishing (if so, what kind of fish), swimming, wildlife viewing, ??
The water that is entering the pond, where is it coming from (i.e. what is it running thru amd collecting before it gets to your pond)?
I was planning on upload pics, but got home late. Will try to get some in the next day or two.
Bob
Originally Posted By: Bluegillerkiller
What's your goals with the pond? In Washington I would think it's Not quite deep enough to support fish over winter.. And the depth needed I'm not sure is reachable by aeration alone.. Some pics would be cool..
Then I'd definately look into a good aeration system to rid the pond of the smell. Maybe some bacteria as well, there's a thread that just started recently about one of the bacteria products. They won't work on their own, you will need the aeration system to take advantage of the bacteria.
So I picked up a Gast 74R135-P101-H200X pump off of ebay. I rewired it, connected a 20 foot 3/8" hose and tied a heavy piece of metal to it. Been bubbling away for a couple days.
Next step is to get a submersible diffuser. I am looking at the dual vertex which is already attached to a plate.
Anyway, thanks to everyone I am moving forward. Bob
Originally Posted By: esshup
A lot of the sediment could be brought in by the stream. Is there any way to dig a settlement pond further upstream to trap any dirt that would be washing into the pond?
You're doing good to remove the bamboo and thinning out the trees.
Regarding trees on the dam, remove any that are 4" DBH and under. Any larger than that, you'll have to leave there and hope they live for a long, long time. With that much water going thru the pond during the winter, any weak spots in teh dam would be quickly washed out (like a rotted tree root).
The bacteria will eata way at the muck, but they need O2 to do their work. That's the reason for the aeration system.
As was said before, what are your goals for the pond?