08-02-94 CCM - Laserfiche WebLink

Home Browse Search

The south fork begins west of Inwood Avenue, in the City of Lake Elmo. Water in the south fork flows easterly to Lake Elmo Park Reserve and then to the northwest bay of Eagle Point Lake. The south fork is not a DNR-protected watercourse. The Eagle Point Creek tributary watershed is 3,241 acres, of which 2,422 acres is tributary to the north fork and 819 acres is tributary to the south fork. The upstream portion of the north fork tributary area is comprised of subwatersheds: EPC2 - EPC18, EPC20, EPC22 -EPC36, EPC53, EPC62, EPC72, EPC76, EPC80, EPC88, OL13, OL14, EPN1 - EPN3, and EPN5 - EPN8. In addition, the north fork receives the outflows from Lake Jane, Lake Olson and Olson Lake Estates (5,328 acres). Therefore, the total tributary area to the north fork of Eagle Point Creek is 7,750 acres. The south fork tributary area is comprised of subwatersheds EPL1 - EPL5 and EPS1 - EPS4. Figure 3 shows the tributary area. Almost all of the tributary area within the City of Oakdale is developed, with the exception of undeveloped land located east of I-694, between Stillwater Boulevard and 40th Street North. Large portions of the tributary area in the City of Lake Elmo are undeveloped, including the downstream portions of the creek which are located within the Lake Elmo Park Reserve. 4.2.10.2 Draina¢e Patterns and Stormwater Issues The City of Oakdale's Surface Water Management Plan shows the discharge points and associated flowrates at the City of Oakdale's boundary. In the Eagle Point Creek subwatershed, these discharge points are located in subwatersheds OL14 (proposed discharge - currently flows to a landlocked subwatershed), EPC21 (flows to a landlocked subwatershed), EPC22, EPC35, EPC36, EP13, EPL4, and EPL5. After the creek leaves the City of Oakdale, there is minimal on -stream storage available for rate control. As a result, streambank erosion is currently problem and could become more severe. The north fork of Eagle Point Creek does not have sufficient capacity and frequently overtops its banks, flooding and eroding adjoining property. In July of 1992, a Lake Elmo resident reported that the creek floods her property every spring, taking six inches of her yard with it. The north fork also floods Tablyn Park and properties adjacent to the driveway crossing at 28th Street North and Jamley Avenue North, both located in Lake Elmo. Debris in the creek channel has contributed to flooding problems in the area of the creek crossing. Remains of an abutment just downstream of the creek crossing may also restrict flows, possibly contributing to flooding problems in the area. The DNR suggests that an unmanaged buffer strip of woody vegetation be established along the creek to prevent erosion of the streambanks. As part of VBWD's Project 1007, the 48-inch diameter culvert at the 28th Street North and Jan -ley Avenue North creek crossing was replaced with a 73-inch span arch culvert. Flowrates in the creek channel downstream of Beutel Pond are also affected by the flows from the Tri- Lakes Outlet and Beutel Pond. The peak 100-year flowrate in the north fork of Eagle Point Creek, downstream of Beutel Pond is approximately 900 cfs. VBWD's Project 1007 increased the flowrates in the north fork of Eagle Point Creek by approximately 60 cfs (7%). Of the 60 cfs, 15 cfs is the contribution from the .Tri-Lakes outlet and 45 cfs is the contribution from the Jamaca Court and Beutel Pond area. The Beutel Pond outlet was increased from a 12-inch diameter pipe to a 48-inch diameter pipe to reduce flooding problems in the Jamaca Court area and in response to increased inflow from the Tri-Lakes outlet. Another area of concern is a 200-acre area (subwatersheds OL13 and OL14) located between T.H. 5 and 40th Street North, west of Ideal Avenue North, in the City of Oakdale. The existing drainage patterns in the area are not well-defined. The design of VBWD's Project 1007 did not include this area as tributary to the project, however it was shown as tributary to Beutel's Pond in the previous VBWD water management plan. The current overflow from the 23\82\045\SEC4.RPT\KMH 35 DRAFT: June 23, 1994