Update, 8 p.m.: Highway Department Director Jeff Bryant told Clarksville Now late Tuesday that the basin next to Hankook Atlas BX was the one that overflowed, spilling stormwater northwest, across International Boulevard to the west of Atlas BX, and into the Dunlop basin, which then flowed southwest to Grace Community Church and into Farmington. He said that created the surge of water that overwhelmed Highway Department operations. Bryant said the basin near LG Chem also appears to have overflowed, spilling across Charles Bell Road into the Dunlop basin.

Previously:

CLARKSVILLE, TN (CLARKSVILLE NOW) – Since the beginning of the year, the Clarksville-Montgomery County Industrial Development Board has seen one of their water basins at the Industrial Park overflow twice due to unprecedented rainfall volume. But as of Tuesday, it’s still not clear whether an overflow from another of their basins contributed to additional water pouring into the Dunlop Basin, then into the Farmington subdivision.

There are three stormwater basins on IDB-owned property:

  • North of Corporate Parkway Boulevard and east of Smokestack Drive.
  • Just south of International Boulevard across from Atlas BX to the north.
  • Just east of Hankook Atlas BX and southwest of Dunlop Lane and Rollow Lane.

January and February storms

“Montgomery County has received over 24 inches of rain from January 30 through April 5, 2025, an amount that represents 50% of Clarksville-Montgomery County’s average annual rainfall,” said IDB Executive Director Josh Ward.

He said that at the end of January, when Clarksville got 8 inches of rainfall, the three IDB water basins successfully held the stormwater. A few days later, at the beginning of February, the second major storm event dropped another 8 inches of rain. “With saturated soils and inundated stormwater systems from the first storm event, the basin adjacent to International Boulevard briefly overflowed onto the roadway,” Ward said. That event also flooded the Atlas BX building, across International to the north.

April storm event

During the third storm event on the weekend of April 5, the basin just south of International Boulevard overflowed again, but it did not flood Atlas BX, Ward said.

As for the third basin – the one southwest of Dunlop and Rollow – Ward said it was full, but it did not affect Atlas BX. He had not heard of any reports that it overflowed, or of water crossing Dunlop Lane into the basin to the north.

On April 10, the Montgomery County Highway Department indicated that a water basin overflow in that area contributed to the flooding that ended up in Farmington. “The Farmington injection well abruptly stopped draining—likely due to a blockage or a saturated aquifer,” MCHD said in a news release. “Simultaneously, a large basin north of International Boulevard overflowed into the Dunlop Basin, sending an excessive volume of water into Farmington, which lacks a surface outlet to the Red River.”

Preliminary estimates indicate that this overflow added more than 250,000 gallons per minute into the Farmington Basin, the release said.

Clarksville Now has reached out to both MCHD and Montgomery County Government for the specific location of the referenced basin that overflowed.

| MORE: Highway Department overwhelmed basin failures, blocked drainage, 250,000 gallons per minute

Solution in works

Montgomery County Government has allocated funds to the IDB to expand its three stormwater basins. Ward said the basins will be excavated at the edges and silt will be pumped out of them. Ward said that once the design phase has been completed, the surrounding industries will contribute funding for the expansions. Construction is expected to start later this year, he said.

Christian Brown contributed to this report. 

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