Good Underground Utility Detector?

[trapper]

Have had good lick with a pair of metal coat hangers bent into a L  found a waterline 5 ft down so I could cap it off before having my barn buried,  Found electric wires the same to be sure which way they ran.

[Erik A]

I have had good luck with this one

https://www.ridgid.com/us/en/seektech-sr20-locator

It will locate 60hz but the power needs to be on, besides other frequencies.

To send a signal down a metal pipe or wire you need one of these

https://www.ridgid.com/us/en/seektech-st305-line-transmitter

Also look up sonde's for these, you need an open non-metal pipe to push it in! 512 kh would work good. I can locate to about 12 ft deep with good accuracy.

You can push a sonde down a pipe with a fish tape and get a better location than just a wire.

Although a wire or energizing metal pipe would be just fine for your needs.

You can rent a gpr, wont be cheap and there is a learning curve but it should find conduits , voids (septic), pipes , gold, etc. the others need a signal to locate

Just a thought....... I had a dealer come out and demo a gpr and we spent about 3 hours locating on a property for me..... just a thought!

[RichTired]

I bet if you find some bones you could get someone to help locate "things"...

[YellowHammer]

Is there a way to find pressurized plastic pipe, like a water or well line in the ground?

I tried the water witching thing many years ago, it doesn't work for me.

[Erik A]

Three options :

1 gpr
2 dowsing with witchy sticks
3 backhoe bucket

[Southside]

Post hole augers are good for finding water pipe too.

[YellowHammer]

I've already had a couple "offers" from people who said they would be glad to metal detect as long as I let them keep everything valuable they find... : : : Let's see, let me think about that.

As soon as the second guy said that, (I mean, I'm out there in my excavator and I have to shut it off and get out to talk to the guy) I get a little aggravated, started looking down at my shirt, and even over my shoulder.  I made a big show of it, so he asked me what I was doing.  I said, "You are the second person to make me the same offer, I must have worn a shirt that said "stupid" on it."  He laughed, a little.....

[Tom King]

If you know approximately where it is, I would set the excavator bucket to take a cut about 4" deep, and back the machine up to leave a clean cut bottom swath perpendicular to the way the trench runs.  The trench should show up.  That's what I was talking about earlier by scraping the top of the ground away with my loader bucket (tractor with smooth cutting edge).

I tried to find a picture but couldn't.

[YellowHammer]

I've got a smooth lip grading bucket I can do that and I'll give it a try

Here's the kind of web I have on this picture. Well1, Well2, county water lines, and shutoff valves, a farm water hydrant, county line power to the meter and another seconds power to run street light

In this case I don't want to dig it up but I sure would like to know where everything is routed. 

 

  

[RichTired]

Robert,
   I am sure some of your former Huntsville Rocket Center/NASA buddies could get some equipment to chart those utilities. Probably from outer space...
:D

[doc henderson]

On my property, we usually fill trenches with sand to cover the Conduent or pipe.  while digging if you bring up sand, you better grab a probe or spade and find that utility.  you can also bury yellow plastic caution tape.  better yet, place a conductor along with water pipes and gas lines.  

[Mooseherder]

I buried red plastic lines over my water and power digs for future explorers.  :D

[Southside]

Suddenly I have the desire to buy a few rolls of "Caution Crime Scene" and "Caution Bio-hazard" tape and bury it with future water and utility lines I need to install just to mess with someone who isn't even born yet.   :D

[Marty]

While working in the Telecom World I mainly used Dynatel and Radiodetection cable locators. We now use Vivax-Metrotech with my Company. All locators are generally good, but do have a learning curve. When my sons started working with me they struggled with locating and would get aggravated at how easy I made it look. It is an art.
We also use Witchy Sticks (copper wires) daily to locate water and sewer lines. You will think this is crazy, but it's true. The trick is you have to Believe it works. If you doubt it works. It will not work. And I have found that the closer my Oldest Son is to me the farther they will be off. He is a non-believer.
In my opinion. You would be better off to find someone to locater your utilities for you. 

[Sod saw]

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I agree with Marty.  Finding hidden wire and pipe is an art.  

I can find wires but I don't own the equipment. I don't do it often enough to justify the cost of good equipment.

Finding plastic is different skill level.   I worked with a water department under ground water guy and he would listen for the sound of running water.   Yes with his ears and a stethoscope.  The water has to be running thru the pipes.  Around here we keep water lines 4 to 5 feet deep due to cold so you may find it easier to hear running water in your warmer part of the country.

As for caution tape?  Next week's small swimming pool underground electric install will get the same caution tape as last months 8,000 volt primary underground installation.  Water lines too.   Always!


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[YellowHammer]

I'm seeing some refurbished Dynatel's for a pretty decent price.  Or, I may just continue to use my excavator bucket to find them, look for spoil in the trench, and dig slowly.  

Here's a funny story about the water witching.  The first well I paid to drill, at $20 per foot, was put in by the guy who was on the cover of Alabama Cooperator magazine, declared as the "Best Water Witcher" in the state.  That's one reason I picked him, I figured I needed an expert on my side.

So I called him up, he dowsed me a hole, in the middle of my field, exactly where I didn't want it, and 200 feet later, he drilled me nothing but powder.  $4,000 of my bucks gone for nothing.  So I made him a deal.  Double or nothing.  I challenged him to drill me another hole, anywhere on the property he wanted, go to 200 ft (all the local wells are at 70 to 90) and if he hit water, I'd pay him for both holes, but if he drilled another dry hole, he got nothing.  So he witches and witches, even cuts a limb off a local tree and dowses some more and says "Here's the spot" and commences to drilling.  200 feet later, nothing but limestone powder.  He loses $8,000 and I lose two basketballs that I shoved in the holes to plug them.

Fast forward to my next farm, a decade later, the one I'm currently on, and I need a well.  However, this time, I call up the state geologist, they have analysis of all the shale types under my farm, records of all the other wells (depth and flow rate), water table levels, and I get them to look at satellite photos and the geologist points out all the places I will hit the water gravel bearing layer and how deep.  So with all that info, I call up a different driller, tell him nothing about the research I'd already done, and he witches and witches and picks a spot in the middle of my field, again.  I just say "No, I want the well right here, right next to my barn, next to my power outlet" and then proceed to tell him that he will hit water at 95 feet and it will be 7 gallons per minute."  He tells me "That's not how it works, you drill where the water is, not where you want the hole."  I tell him, nope, I want it right here.  He looks at me like I'm insane, but he sets the drill truck up, (it's my money) and at 97 feet, he hits 7 gallons per minute. He tells me he would offer me a job if I wanted it and how did I dowse the hole?  

I said, I used a telephone and a geologist. :D :D :D    

[Old Greenhorn]

I still think drilling wells is a crapshoot with the best of gear.
 Our section has terrible water, lots of iron and some sulfur. More or less depending on the well. Where my house is built they did a bunch at once and the builder cut corners and the wells have proven to be 'marginal' over the last 40 years. The house up the hill and to my south had a poor one and finally during a dry summer, it went dry. SO the owner hired out for a new well to be drilled and what doo you know, they hit and artesian well at around 120'. He took out all his filtration equipment, and just added a storage tank and a pressure pump to get his system up to 60psi. The well itself would fill the tank at about 5gpm just with it's own pressure. It's the only one I know of around here within 25 miles. Crystal clear water too.

[thecfarm]

I have very good water. Wife use to cook here to sell food. Have to have the water tested above what a homeowner would have to do. It passes every time. I think it has to be tested every year. We did it for 3 years.
I did not see the well truck. It set up, drilled down 40 feet with casing and then hit ledge. Went down another 100 feet and hit water, 40 gallons a minute. They thought it was going to flow over, never has.
The contractor that was building the house, told me as soon as the driver saw all the rocks, he knew he was going to hit water, lots of it.

[Larry]

 After seeing the abuse Dynatel's get on the job and with the age of components I would be hesitant about buying a refurbished one. During my working life I did send a few in to get refurbished when they quit working. Sometimes they came back perfect but other times.....

The reason the Dynatel is a professional machine is because of its advanced capability's, It can locate sheath faults, conductor to conductor faults, conductor to sheath faults along with a few other things. I don't think you need those features. The machine mentioned in my first post would probably be a better choice.

After that training and experience comes into play. Say two lines running parallel to each other 10' apart. Sometimes a machine will show a false line between those two.....which results in cut cable. A single cable out in the middle of a field is a easy locate.

Dowsing for a water well is quite different from witching a buried utility and should not be talked about together. I can easily witch a line but finding water is not in my skill box.