Laserfiche WebLink
SECTION 2 <br /> <br /> <br /> <br /> <br />Surface Water Management Plan Section 2: Land and Water Resource Inventory <br />City of Arden Hills <br />WSB Project No. 3455-200 Page 1 <br /> <br />2. LAND AND WATER RESOURCE INVENTORY <br /> <br />In conformance with the Metropolitan Surface Water Management Act and as required in Minnesota <br />Rules Section 8410.0060, this section of the plan provides a general description and summary of the <br />climate, geology, surficial topography, surface and ground water resource data, soils, land use, public <br />utilities services, water-based recreation, fish and wildlife habitat, unique features, scenic areas, and <br />pollutant sources. This section also identifies where detailed information can be obtained for many of <br />these areas of concern. <br /> <br />2.1. Physical Setting <br /> <br />2.1.1. Climate <br /> <br />The climate within the Minneapolis/St. Paul metropolitan area is described as a humid continental <br />climate with moderate precipitation, wide daily temperature variations, warm humid summers, and <br />cold winters. The total average annual precipitation is approximately 31 inches, of which <br />approximately one-third occurs in the months of June, July, and August. The annual snowfall <br />average is about 54 inches and is equivalent to approximately 5.4 inches of water. Average <br />monthly temperature and precipitation are shown in Table 2-1. Additional climatological <br />information for the area can be obtained from State Climatologist website at <br />http://climate.umn.edu/. <br /> <br />Table 2-1 Average Monthly Temperature and Precipitation Data <br />Months Average Temp (F°) Precipitation (inches) Snowfall (inches) <br />January 15.6 0.9 12.2 <br />February 20.8 0.77 7.7 <br />March 32.8 1.89 10.3 <br />April 47.5 2.66 2.4 <br />May 59.1 3.36 0 <br />June 68.8 4.25 0 <br />July 73.8 4.04 0 <br />August 71.2 4.3 0 <br />September 62 3.08 0 <br />October 48.9 2.43 0.6 <br />November 33.7 1.77 9.3 <br />December 19.7 1.16 11.9 <br />Totals 46.2 30.61 54.4 <br />Source: Minnesota Climatology Working Group, MSP Airport (1981-2010) <br /> <br /> <br />2.1.2. Precipitation <br /> <br />Rainfall frequency estimates are used as design tools in water resource projects. In 2013, the <br />National Oceanic Atmospheric Administration (NOAA) published the Atlas 14 Precipitation- <br />Frequency document that showed an increase in rainfall intensity and design storms from the <br />Dr <br />a <br />f <br />t <br /> <br />11 <br />/ <br />2 <br />0 <br />/ <br />2 <br />0 <br />1 <br />7