County's 300‑year rule and recent state changes spotlighted in groundwater study

Sep 23, 2026

Moore Engineering told commissioners Elbert County's 300‑year local rule is more conservative than the state's 100‑year presumptive allocation; the consultant warned a 2021 change introducing 'total allowable withdrawal' can end a water right when formulaed volume is exhausted, raising legal and management questions.

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Moore Engineering's report contrasted the statewide statutory allocation approach — which divides a presumed recoverable volume by 100 years — with Elbert County’s locally adopted 300‑year rule that reduces allowable annual yields. "In Elbert County you actually instead of a 100 ... you have a 300 year rule which ... reduces the amount that you can take per year," the presenter said.

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