Laserfiche WebLink
Purpose <br />•Use the Karth Lake Hydrology Model to consider the benefits and risks of the current and alternative pumping strategies <br />•The current pumping strategy incorporated into the 2003 DNR Permit consists of: <br />•Before October 1, begin pumping when Karth Lake’s elevation reaches 936 elevation (feet above sea level) and continue pumping until the elevation is 934 feet (“936=>934”) <br />•Starting October 1, begin at 935 and pump to 934 (“935=>934”) <br />Note: The URS hydrology study presented by the City of Arden Hills to the DNR in support of the 2003 permit is ambiguous as to whether these elevations use the 1929 standard (NGVD29) or the 1988 standard (NAVD88). NAVD88 = NGVD29 + 0.16. This model assumes that the permit is stated in NGVD29 elevations.