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Community CP -W7 <br />Seasonally Flooded Basin <br />Qualitative Rank: Low <br />Area: 0.1 acres <br />Historic photos from the 1940's and 1950's indicate this wetland was effectively drained for <br />agricultural production, it then had its hydrology restored, likely due to failing tiles and ditches, <br />in the 1970's at the time of that the National Wetlands Inventory (NWI) map was developed by <br />the United States Fish and Wildlife Service. The NWI map indicates the wetland was a shallow <br />marsh. A swale was subsequently excavation after the 1970's to drain the wetland and convert it <br />from a shallow marsh to a seasonally flooded basin. Currently reed canary grass, Canada thistle, <br />burdock, and goldenrod dominate this basin. Other species include red -osier dogwood, <br />buckthorn, cottonwood, boxelder, Siberian elm, Kentucky bluegrass, timothy, wheatgrass, <br />American elm, and riverbank grape. Restoration of this wetland can be accomplished with a <br />berm and spillway across the swale. <br />Community <br />Activity <br />Priority <br />Estimated Cost <br />Comments <br />CP -W7 <br />Restore wetland <br />Medium <br />$500.00 <br />Construct a berm and spillway or <br />trail crossing with culvert raised to <br />historic outfall elevations <br />Community CP -W8 <br />Wet Meadow <br />Qualitative Rank: Medium /Low <br />Area: 0.6 acres <br />Most of this wetland is an excavated drainage way that flows from W11 into W9 and then into <br />Lake Owasso. It widens out near the woodchip trail between this basin and W9 and at this <br />location a mud flat having up to three feet of standing water was observed. Vegetation observed <br />at this location is reed canary grass, bur - marigold, arrowhead, pale smartweed, nut sedge, cattail, <br />water plantain, and heart- leaved tearthumb. <br />City of Roseville 99 <br />Parks Natural Resource Management <br />