A field doesn't usually start ponding for no reason. If a spot drained fine for years and suddenly holds water — drowns out the crop two passes wide, stays wet long after the rest of the field dried — there's a good chance the field tile underneath it has broken, collapsed, or blown out. The tile quit, the water has nowhere to go, and now it sits.
The trick is finding where it failed without trenching up the whole field. Tile breaks leave clues on the surface if you know what to look for. Here's how we track them down — and how you can read the same signs before you call.
First: Is It Actually A Broken Tile?
The single best indicator is change. Tile problems show up as ground that used to drain and now doesn't. If a wet spot has always been wet, that might be a field that was never tiled, or never tiled enough — a different conversation (new field tile installation). But a spot that recently turned wet, in a field you know has tile, points hard at a failed line.
Ask yourself: did this spot farm fine last year? Did something happen — a wet year, deep ripping, a heavy load crossing the field, an outlet bank that caved? A recent change plus new ponding is the classic broken-tile signature.
The Surface Clues
Walk the wet area and the ground around it. A blown tile usually leaves at least one of these:
A wet streak or line
Tile runs in straight lines. If the wet area is a streak — long and narrow, following a direction rather than just a round low spot — you may be looking at the tile run itself, soaked because water is leaking out of a break instead of flowing through.
Greener, ranker growth over the line
Where a tile leaks, the extra water often grows a stripe of darker, taller, or weedier vegetation that traces the line. After it dries, the opposite can show — a stressed, stunted streak where the drowned-out crop never recovered.
A blowhole or sinkhole
When a tile collapses or a joint pulls apart, surface soil can wash down into the void and leave a soft hole or a slumped spot over the line — sometimes a foot or two across, sometimes just a boot-deep soft place. A blowhole over a known tile run is a near-certain marker of the break.
An outlet that quit
Walk to the outlet — the pipe end at the ditch or creek. If it used to run after rains and now trickles, runs muddy, or doesn't run at all, the problem may be at or near the outlet: crushed end, washed-out bank, or a plug backing the whole line up. The outlet is the first place we check, because it's the most common failure point and the easiest to confirm.
Walk The Line From A Known Point
If you have any idea where the tile runs — an old tile map, a remembered outlet, a visible line of growth — start at a known point and follow it. The outlet is the best anchor: from there, the main runs uphill into the field, with laterals branching off. The break is usually between the wet spot and the outlet, because water backs up behind a blockage. So if a spot ponds, the trouble is often downstream of it, toward the outlet, not under the puddle itself.
Note anything the line crosses on its way: a fence row (roots), a field entrance or waterway (equipment crossings), a low wet draw (sediment plugging). Breaks cluster at these spots.
Where Tiles Usually Fail
- The outlet — washed out, crushed, rusted (old metal), or buried when a bank caved or a fence row got pushed out.
- Crossing points — where heavy equipment, deep tillage, or a new lane crushed the line.
- Old clay tile — century-old clay tile collapses with age, especially at the joints.
- Roots — tree and fence-row roots find a joint, get in, and plug it solid.
- Sediment — silt settles in low, flat runs and slowly chokes the flow.
When To Stop Guessing And Dig
Surface clues narrow it down; they don't always pin it exactly. Once we've read the signs and walked the line, we open the ground at the most likely failure — right at a blowhole, just upstream of the outlet, or where the line crosses a suspect spot. With the line exposed, the problem is obvious: a crushed section, a collapsed run, a plugged length, a pulled joint. Then it's locate, dig, splice or replace the bad run, and tie it back to the main so the system drains again. We run a Komatsu PC150LC-6 to dig down clean to the bad section without tearing up more field than we have to.
The aim is always the smallest dig that fixes it — find the break, repair that run, restore the grade, and get the field draining. Trenching the whole field is a last resort, not a starting point.
Bottom Line
A broken or blown field tile gives itself away: ground that used to drain and now ponds, a wet streak following the line, a blowhole over the run, or an outlet that's stopped flowing. Read those clues, walk the line from the outlet, and the break usually narrows down to a section you can dig and fix — no need to tear up the field guessing.
If you've got a spot that turned wet and you think the tile quit, we find and fix blown tile across the 60-mile radius from Mattoon — Charleston, Effingham, Champaign, Decatur, Sullivan, Tuscola, Shelbyville, Pana, and everywhere in between. Call or text (217) 809-0779 and we'll come read the ground and get it draining again.