Floodplain Permitting & Templates for Projects in The City of Centennial
If you need additional guidance, please reach out on our contact us page and one of our floodplain staff will get back to you shortly.
What activities need a Floodplain Development Permit (FPDP)? FPDPs are required for all activities in the floodplain.
FEMA defines development as “any man-made change to improved or un-improved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations, or storage of equipment and materials.”
SEMSWA’s Floodplain Program issues Floodplain Development Permits (FPDPs) for projects in and around the 100-year floodplain within our service area. A FPDP must be approved before other local permits (e.g., building, street cut, right-of-way use, GESC, public improvements) can be issued and prior to any other development, use, or change of use of land located in the Floodplain.
All activities, regardless of impact, need to be permitted. Even when it is apparent that there are no adverse impacts to the floodplain, a permit is required for administrative purposes to ensure that SEMSWA is aware of the activities within the floodplain and that they have been evaluated for compliance with Centennial requirements.
Centennial Floodplain Regulations and Permitting Requirements follow Federal and State criteria and are authorized through the City Land Development Code and are described in detail in the SEMSWA Stormwater Management Manual.
Hydraulic modeling may be required to determine if the proposed project will cause an impact to the floodplain.
- No impact means 0.00 ft rise in the Base Flood Elevation (BFE) and no additional width added to the floodplain.
- Impact is defined as any rise in the BFE and/or additional land added to the width of the floodplain.
- Floodplain Development Permit (FPDP)
- No Impact FPDP for no impact projects - An Engineer’s Certification of No Impact is required for administrative purposes for FPDP with no floodplain impact. In some cases, hydraulic modeling could be required.
- Standard FPDP for projects with impacts to a floodplain
- If the impacts will occur to a FEMA floodplain, a Conditional Letter of Map Revision (CLOMR) must be submitted and approved by FEMA prior to approval of the FPDP.
- If the impacts will occur to a local floodplain, i.e., a FHAD floodplain or an area of approximately mapped flood hazard, a Floodplain Modification Study (FMS) must be submitted to and approved by SEMSWA prior to approval of the FPDP. The FMS is a project-specific study on floodplain impacts.
- Annual Floodplain Development Permit – special permit issued for a calendar year specifically for Utility Companies or Parks and Recreation Districts who have various projects within the floodplain (see annual permits page)
If you are concerned about buildings, sheds, or fences you see being built near waterways and known floodplains, please reach out to SEMSWA.
- Call SEMSWA at 303-858-8844
- Contact us using the Contact Us form
| FPDP with no impacts | FPDP with impacts to FHAD floodplain | FPDP with impacts to FEMA floodplain - CLOMR | Annual FPDP |
|---|---|---|---|
| 1. City of Centennial Floodplain Development Permit | 1. City of Centennial Floodplain Development Permit | 1. City of Centennial Floodplain Development Permit | 1. Annual Floodplain Development Permit Available to Utilities |
| 2. Engineer's Certificate of No Impact. See 2A and 2B template choices below. | 2. Floodplain Modification Study | 2. CLOMR Report | 2. Annual Floodplain Development Permit Available to Parks & Recreation Districts |
| 2A. Detailed Floodplain (Zone AE with BFEs) | 3. Engineers Floodplain Certification Statement | 3. Engineer's Floodplain Certification Statement | |
| 2B. Approximate Floodplain (Zone A without BFEs) | 4. Hydraulic Modeling | 4. Hydraulic Modelling | |
| 5. Hydraulic Comparison Table | 5. Hydraulic Comparison Table | ||
| 6. FEMA MT-2 forms |
City of Centennial Floodplain Development Permit Application
Use for all proposed projects located in the floodplain within the City of Centennial:
City of Centennial Floodplain Development Permit
No Impact Letter Templates
Engineer's Certification of No Impact (Approximate Floodplain) Template (City)Engineer's Certification of No Impact Template (City)
CLOMR/LOMR templates
Floodplain Modification Study and Conditional Letter of Map Revision (CLOMR) ChecklistLetter of Map Revision (LOMR) No CLOMR ChecklistLOMR Following CLOMR ChecklistLOMR As-Built Drawing ChecklistEngineers Floodplain Certification StatementHydraulic Comparison Table
FEMA MT-1 and MT-2 forms
- MT-1: The FEMA forms for individual property owners (LOMA, LOMR-F) are located at: https://www.fema.gov/flood-maps/change-your-flood-zone/paper-application-forms/mt-1
- MT-2: The FEMA forms for larger projects (CLOMR/LOMR) are located at: https://www.fema.gov/flood-maps/change-your-flood-zone/paper-application-forms/mt-2
In an effort to make the floodplain permitting process more efficient and accommodating to consultants for certain routine projects that cause no impacts to the floodplain within the City of Centennial, the SEMSWA Floodplain Department has created two Annual Floodplain Development Permits. These Annual Floodplain Development Permits are being offered to Utility Companies as well as to the Parks and Recreation Districts for projects located within the City of Centennial.