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Having considered the level of detail, review the following sections for details on hydrologic or hydraulic analysis that are applicable to land development proposals. the safety of the travelling public is threatened.the structural integrity of the highway right-of-way is threatened or.damage to the property of riparian landowners located upstream or downstream of the highway right-of-way.The number of upstream and or downstream riparian owners, including the highway right-of-way.Ī more detailed hydrologic or hydraulic analysis may be needed where any of the following may occur (typically, a higher level of detail involves the input of more data):.roof tops or paved areas), the amount of serviced area and the method of servicing (i.e. The surrounding land use in terms of the amount of impervious areas proposed (i.e.roof tops or paved areas) proposed, the amount of serviced area and the method of servicing (i.e. The type of land development that is proposed in terms of the amount of impervious areas (i.e.As a guide, review the following land development attributes.
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Where a lower level of detail is proposed for the hydrologic or hydraulic analysis, the SWM report should provide rationale on why the lower level of detail is appropriate. Assessing Flow in Stormwater Management Detention Facilities.So, before proceeding review the following. It is recognised that the level of detail required in the hydrologic or hydraulic analysis will vary, depending on the type of land development and the region of the province where it is located. Since impacts are assessed through a hydrologic or hydraulic analysis of the highway drainage works, every proposed land development should provide some form of hydrologic or hydraulic analysis. Where a proposed land development will be discharging stormwater runoff to a receiving drainage system, any potential impacts to the receiving drainage system or the highway drainage system must be examined.