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<br />e <br /> <br />CIlY OF LA PORTE, TX <br />CRS ACTIVITY 510 <br />FLOODPLAIN MANAGEMENT PLAN <br /> <br />e <br /> <br />Lomax Area <br /> <br />The drainage in this area has been a problem for a long time. The Flood Control Ditch <br />#F101-00-00 is being reconstruded in several phases. The problems on North "P" Street <br />are due to the volume of water traveling through the Southern Pacific outfall into the <br />newly dug part of the F101 at Highway 146. The system cannot handle the volume of <br />water at an above average rainfall. <br /> <br />The City of La Porte has been experiencing flooding problems in the F101 watershed <br />area for many years. These flooding problems occur during moderate rainfall events, <br />when street flooding often makes roadways impassable. <br /> <br />HCFCD along with the City of La Porte has been working to improve drainage in this <br />area. The District completed construction of the ultimate channel downstream of SH146 <br />in 1993. The Department of Transportation has increased the capacity of F101 at SH <br />146, and HCFCD has also improved the section through Strang Yard. These <br />improvements, along with other improvements to Unit F101-00-00, should reduce the <br />need for onsite detention in the future. <br /> <br />Pinegrove Valley <br />The problem at 11818 and 11820 Fieldcrest was caused by the size of ditches on <br />Fieldcrest. Sens Road lacks a sufficient fall in elevation and the size of the culverts are <br />limited. The City has reconstructed the system, which has helped the problem <br />significantly. Harris County has plans to widen Sens Road and adding new culverts, will <br />which also help alleviate the flooding. <br /> <br />Lomax <br />The problems at 2226,2801 and 1606 Sens Road are the same as North "H" Street: <br />Flood Control Ditch #F101 gets full and the water backs-up. <br /> <br />Bayou Glen <br />At 111 McCarty Lane, the ditch is cut on the maximum grade of 9% along Browning <br />Lane to North lip" Street. The water backs up at the end of North "P" Street due to Flood <br />Control Ditch 8106-06. The cleaning of this ditch would alleviate much of this problem <br />and would help the Meadow Crest Subdivision. Harris County has informed the Public <br />Works Department that this ditch is on the list for reconstruction. 1419 Lemon Lane can <br />also be included in this area. <br /> <br />Pinegrove Valley <br />At 11012 and 12020 N. Avenue ilL" the RCP along the full length of North Avenue "L" are <br />not sized property and the ditch on the south side of the street backs-up. This is due to <br />constridion at Sens Road. This problem should be alleviated with the Sens Road <br />widening. North Avenue ilL" falls within Harris County control. <br /> <br />City of La Porte <br />Planning Department, rmh <br /> <br />Page 15 of26 <br />June 10, 1999 <br />