Environmental Rules in Olathe, KS (2026)
4 verified environmental rules for Olathe, Kansas, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Roof drains, sump pump discharges and French drains on Olathe homes must end at least four feet inside the property line, or four feet from the right-of-way: closer discharges are a declared public nuisance.
Olathe Private Drainage Discharge Rules
Some RestrictionsOlathe Municipal Code § 17.04.041
Private residential drainage systems including, but not limited to, roof drains, sump pump discharge pipes, and French drains, are not part of the minor system. Discharges from private residential drainage systems must terminate no fewer than four (4) feet inside the boundary line of the private property generating the discharge or four (4) feet from the public right-of-way, whichever is closer...
Erosion Control
Olathe requires a land disturbance permit before any grading begins; small projects disturbing under an acre, with minimal fill and no drainageway obstruction, are exempt from the permit requirement.
Olathe Grading and Land Disturbance Permits
Some RestrictionsOlathe Municipal Code §§ 17.12.050, 17.12.060(A)(1)
(A) No person is allowed to initiate any grading or other land disturbance activity without first obtaining a land disturbance permit. ... (1) Land disturbance activities that cumulatively disturb less than one (1) acre, and are not part of a larger common plan of development or sale which disturbs a cumulative area of one (1) acre or more, and involves fill of less than three (3) feet in heigh...
Flood Zones
Any construction or substantial improvement inside Olathe's mapped Special Flood Hazard Areas, FEMA's A, AE, AO, and AH zones, needs a separate floodplain development permit from the city's Floodplain Administrator before work begins.
Olathe Floodplain Development Permit
Significant RestrictionsOlathe Unified Development Ordinance § 18.30.100.D.2
A floodplain development permit is required for all proposed construction or other development, including the placement of manufactured homes, in the areas described in subsection C.1. No person, firm, corporation, or unit of government shall initiate any development or substantial improvement or cause the same to be done without first obtaining a separate floodplain development permit for each...
Flood Elevation Requirements
Olathe requires new or substantially improved residential structures in the 100-year floodplain to elevate their lowest floor at least 2 feet above base flood elevation, certified by a licensed surveyor or engineer.
Olathe Base Flood Elevation Freeboard
Some RestrictionsOlathe Unified Development Ordinance § 18.30.100.F.1
New construction or substantial-improvement of any residential structures on any lot or lots adjacent to or part of the 100-year floodplain, including manufactured homes, shall have the lowest floor, including basements as well as utilities, mechanical and HVAC equipment servicing the building, elevated a minimum of two (2) feet above base flood elevation. The elevation of the lowest floor shal...
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