Nearly four and
half inches of rain fell in Duneland over the five days beginning on Friday,
April 26, and ending on Wednesday, May 1, according to data collected at the
Chesterton wastewater treatment plant.
The five-day total:
4.46 inches, with fully 3.5 inches falling between Monday and Wednesday.
That amount taxed
but did not overwhelm the 1.2-million storage basin at the wastewater
treatment plant, Chief Operator Bill Williams told the Chesterton Tribune.
With a maximum level of 20 feet, he said, the basin was filled to 15.5 feet
by combined stormwater and sanitary sewer flow diverted from the system to
give the plant time to catch up.
There was, however,
no combined sewer overflow into the Little Calumet River, Williams was happy
to report, though there certainly would have been in the absence of the
storage basin. In short, he said, the basin worked exactly as it was
“Daily plant flows
were close to 6 million gallons--well over the design flow capacity of 4.6
million gallons per day,” Williams added.
The 24-hour period
on Monday saw the heaviest rainfall, with 1.33 inches, followed by 1.12
inches on Wednesday and 1.05 inches on Tuesday. A total of 0.96 inches fell
on Friday and Saturday. A rainfall total for Thursday was not available this
Commissioner John Schnadenberg reported no flooding of roadways in town,
Town Engineer Mark O’Dell did say that the ground is super-saturated and
that his office received multiple reports from residents of unusual pooling
in their yards.