5 rules for unincorporated Shawnee County, Kansas.
Verified from official government sources
Land disturbance of one acre or more needs a KDHE construction stormwater permit before work begins. The City of Topeka and Shawnee County also run MS4 programs, so runoff toward the Kansas River and Shunganunga Creek draws local review.
Kansas ties erosion control to its construction stormwater permit. A site disturbing one acre or more must keep sediment on-site under a stormwater pollution prevention plan, with local inspection by Topeka or Shawnee County.
Kansas is landlocked, so no coastal law applies. Building near the Kansas River, Soldier Creek, or Shunganunga Creek instead triggers floodplain permitting, state Division of Water Resources review, and federal Army Corps of Engineers permits.
K.S.A. 24-126
It shall be unlawful for any person, corporation, drainage or levee district, county, city or township, without first obtaining the approval of plans for the same by the chief engineer of the division of water resources, to construct, cause to be constructed, maintain or cause to be maintained, any levee or other such improvement on, along or near any stream of this state which is subject to fl...
Shawnee County and the City of Topeka enforce FEMA floodplain standards and Kansas Division of Water Resources minimums. A floodplain development permit is required before building or filling in a mapped special flood hazard area.
Kansas has no statewide grading permit. Earthwork disturbing one acre or more triggers a KDHE stormwater permit, and the City of Topeka and Shawnee County review grading and drainage through their local codes.
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