[0:01] [Music] [0:06] hi I'm Jeff Dunn with the Vermillion [0:08] River Wershed today we're in Foxboro [0:11] Park west of Cedar and north of Dodd the [0:14] north creek of the Vermillion River [0:16] bisects through this park when the park [0:19] was developed and the land was developed [0:21] in the late '7s there was little if any [0:24] regard or consideration giving to storm [0:27] water runoff around the same time in [0:29] 1979 the state of Minnesota enacted [0:32] legislation for storm water management [0:36] for new development from houses [0:39] driveways streets from areas that were [0:42] undeveloped before that all that [0:44] impervious area created a lot more [0:46] runoff and it caused flooding problems [0:49] it caused bank erosion along the creeks [0:52] stirred up a lot of sediment the city of [0:54] Lakeville started looking at how they [0:57] could retrofit one of these ponds into [0:59] an into the urban landscape and they [1:03] found that Foxboro Park was an ideal [1:05] candidate the city of Lakeville along [1:08] with the Vermillion River Wershed [1:10] submitted for a clean water grant the [1:13] city was awarded [1:15] $350,000 to construct the retrofit or to [1:18] construct the pump the city also [1:20] contributed as well as the Vermillion [1:22] River wershed and Dakota counties let's [1:25] go take a look at the pond and we'll [1:28] talk about some of the components of the [1:30] pond and how they work together to [1:33] manage storm water [1:37] so coming down from the subdivision [1:40] above us is that 220 acres that used to [1:43] drain through the pipe system that's [1:46] underneath my feet and then it would [1:48] discharge about 200 yd down into the [1:52] trees directly into North Creek and it [1:55] was not treated uh they didn't do any [1:57] detention to try to regulate those storm [2:00] water flows so that's kind of what [2:02] started the flooding uh downstream and [2:04] and those issues and the sediment [2:07] loading into the creek this is a [2:09] diversion manhole we dropped this [2:11] manhole over that existing pipe that [2:13] went out that way and then we channeled [2:16] the flows with a pipe directly into the [2:20] pond that was built last year now if the [2:23] water becomes too much flow to get into [2:25] the pond it comes right out of this [2:27] great assembly and goes down to the [2:30] creek like it used to do what you try to [2:32] target is about that 2-year storm for [2:36] water quality treatment and flood [2:38] control because that particular storm [2:41] the ones that happen frequently during [2:44] the summer and the summer afternoons you [2:47] want to try to treat that water to get [2:49] the sediment removal and to do other [2:51] things with it to improve the water [2:53] quality at this location where this pipe [2:55] is is where the water from upstream [2:58] empties into the pond this where the wet [3:00] area is is called a sediment for bay or [3:03] a settling ba…