Laserfiche WebLink
<br />6. the detention basins, slopes, bottom, maintenance berm, and other associated right-of-way shall <br />be final graded with a minimum of 6" top soil the hydro-mulch or drill-seeded and watered to <br />facilitate full grass coverage. <br />7. parties responsible for maintenance of the detention facility must be shown on the plat or plans. <br />8. Pumped detention systems may be allowed with specific approval from the City Engineer. <br /> <br />5.5.4 Ownership and Maintenance of Facilities <br /> <br />The City will not accept maintenance of on site facilities that serve only one tract or development, unless it <br />is determined to have other public benefits, is recommended by staff and approved by the Planning and <br />Zoning Commission. <br /> <br />Harris County Flood Control District may, at their discretion, accept maintenance of facilities, provided <br />they are designed in accordance with the District's criteria manual. Requests for Harris County Flood <br />Control District to assume maintenance of any facility should be coordinated with the City prior to any <br />development approvals. <br /> <br />5.6 ADDITIONAL DESIGN REQUIREMENTS <br /> <br />5.6. I Discharge Points <br /> <br />The developer shall terminate all drainage improvements at a discharge point approved by the City. The <br />developer shall design and construct such discharge point, or outlet, to prevent damage to or overflowing <br />into adjacent property. The City may require creek improvement, channel lining, energy dissipaters or <br />other improvements for such outlet to prevent erosion or increase the flow capacity. <br /> <br />Finished elevations of new pavement, parking areas, or other improvements shall be designed so that each <br />succeeding high point is lower when moving in a downstream direction. This ensures the 1 DO-year <br />discharge has an unobstructed path to the discharge point whether discharging to a channel or detention <br />pond. <br /> <br />5.6.2 Public Streets as Drainage Facilities <br /> <br />1. Maximum depth of water to be allowed in local streets during design flow shall be at the top <br />crown, or top of curb, whichever is less. <br />2. Maximum spread of water in collector streets during design flow shall allow for one clear lane <br />of traffic (12 feet wide). <br />3. Maximum spread of water in arterial streets during design flow shall allow for two clear lanes <br />of traffic (24 feet wide). <br /> <br />5.6.3 Drainage Channels and Structures <br /> <br />I. The developer shaIJ install an underground storm drain on curb and gutter streets beginning at <br />the point where calculated storm water runoff is of such quantity that it exceeds the height <br />specified above. The developer shall construct the storm drain system from the point to an <br />approved outlet. <br />2. For non-curb and gutter streets, the developer may use open channel (channel or ditch) methods <br />o dispose of stonn water specified above. Such channels may be in dedicated draining easements <br />outside the standard street right-of-way upon City approval of the location and alignment of such <br />easements. Alternatively, the developer may widen the street right-of-way to accommodate an <br />open channel of greater capacity than the standard street/ditch section. <br />3. If the developer locates the channel in a widened street right-of-way, the City shall approve the <br />right-of-way width and channel configuration. the depth of flow in the channel shall not exceed <br />one (1) foot as measured from the ditch flowline to the point on the roadway established as the <br />high water level in this section. <br /> <br />Stonnwater Criteria Page 6 of 10 <br />