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You expect a storm sewer line occasionally to get clogged up with dirt, leaves and litter.

But a big red ball?

Not just a small, kick-it-around-the-yard ball, but a 24-inch stability ball, the kind used for exercising to tighten your abs and shape your obliques.

That’s exactly what city maintenance crews found in a drain pipe along Highway 281 at State Street.

“We’re guessing that this was in the back of somebody’s pickup and it was blown out by the wind,” Public Works Director John Collins said. “It’s kind of funny.”

But the impact of a large exercise ball in a storm drain is not funny. It can plug pipes and lead to standing water along the city’s main commercial corridor.

Collins said the ditches on Highway 281 were holding water — more than they should — so crews were dispatched to televise the lines.

The city has a small remote-controlled camera mounted on a carrier with rugged wheels that literally drives through the drain pipes to check for accumulated debris, silt or tree roots impeding water flow. A remote-controlled saw can be mounted on the device to trim roots back, Collins said.