County suspends 1.66-inch drawdown rule for stormwater while engineering seeks alternatives

Apr 15, 2026

Kendall County engineering asked the court to suspend a technical 1.66-inch drawdown requirement in the county's stormwater detention rules because small outlets are clogging or requiring complex valves; the court suspended the requirement and asked staff to return with alternatives by October 2026.

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County engineering told the commissioners that the 1.66-inch drawdown requirement included in the county's stormwater detention standards has proven impractical in many local site designs: the small outlet sizes are prone to clogging or require mechanical/valved release mechanisms that are not easily maintained on small, rural parcels. Staff asked the court to suspend the rule while they develop alternatives.

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