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What is a Floodplain?
Any land that is susceptible to being inundated by water from any source. A general and temporary condition of partial or complete inundation of normally dry land area from:
Floodplain Regulations in Randall County
The Randall County Flood Damage Prevention Order contains regulations designed to protect the public safety and health. All development must adhere to federal floodplain regulations (CFR 44). Development applications may be obtained from our offices.
Building in a Floodplain
Before you file an application to develop property within the floodplain, you will need to hire a Surveyor who will certify that the proposed construction will meet the requirements of the Randall County Flood Damage Prevention Order. Please contact our office to schedule a consultation to review your plans and to determine the best course of action to assure that your property will be reasonably safe from flooding. Please note that no construction can begin unless a Floodplain Development Permit has been issued by this office.
Development means any man-made change in improved and unimproved real estate, including, but not limited to, buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials.
What is a floodway and who designates it?
The floodway includes the channel of a river and the adjacent floodplain that state standards specify smaller allowable increases. FEMA requires the community to designate a floodway to avoid the possibility of significantly additional rise in base flood elevations.
Development in a Floodway
A floodway is the channel of a river or other watercourse and the adjacent land areas that must be reserved in Order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height. Residential development is prohibited within an identified floodway.
How do I find out if my property is in a floodplain?
You can request this information in writing (email, fax, or deliver requests) to the County Floodplain Administrator. To assure we have the correct location, please submit with your request the Randall Appraisal District identification number (R#), the physical address, and legal description of the property.
You may also use the FEMA Map Service Center and Flood Map Store. Digital versions and images of flood maps are now available for viewing and printing from the online FEMA Flood Map Store. The Flood Map Store allows users to create a FIRMette at no cost. A FIRMette is a section of the flood hazard map at 100% scale that can be printed on standard paper sizes.
What are the penalties if I don't secure all my permits?
Mandatory Flood Insurance Requirement
The mandatory purchase requirement applies to all forms of federal or federally related financial assistance for buildings located in a Special Flood Hazard Area. This requirement affects loans and grants for the purchase, construction, repair, or improvement of any publicly or privately owned building in the SFHA. This includes machinery, equipment, fixtures, and furnishings contained in such buildings.
How are premiums calculated?
A number of factors determine the premium rates for flood insurance coverage. They include the amount of coverage purchased, location, age of the building, building occupancy, the design of the building, and, for buildings in SFHAs, the elevation. The only buildings in Zones B, C, and X which are eligible for preferred risk coverage at a pre-determined, reduced premium rate are single-family and 1-4 family dwellings. For these exceptions, there are certain loss limitations depending on the amount of insurance purchased.
What constitutes "substantial improvement" or "substantial damage?"
"Substantial improvement" means any rehabilitation, addition, or other improvement of a building when the cost of the improvement equals or exceeds 50 percent of the market value of the building before start of construction of the improvement. The term includes buildings which have incurred "substantial damage," or damage of any origin sustained by a building when the cost of restoring the building to its pre-damaged condition would equal or exceed 50 percent of the market value of the building before the damage occurred. Substantial damage is determined regardless of the actual repair work performed.
How are flood hazard areas and flood levels determined?
Flood hazard areas are determined using statistical analyses of records of river flow, storm tides, and rainfall; information obtained through consultation with the community; floodplain topographic surveys; and hydrologic and hydraulic analysis. The detailed FIS covers those areas that are subject to flooding from rivers and streams, along coastal areas and lake shores, or in shallow flooding areas, but do not include areas of less than one square mile.
What are flood hazard zones and what do they mean?
The Flood Insurance Rate Map (FIRM) shows areas within the 100-year flood boundary, which are termed "Special Flood Hazard Areas (SFHAs)." A "100-year flood" does not refer to a flood that occurs once every 100 years, but refers to a flood level with a 1 percent or greater chance of being equaled or exceeded in any given year. The SFHAs may be further subdivided into insurance risk rate zones (see below). Areas between the 100-year and 500-year flood boundaries are termed "moderate flood hazard areas." The remaining areas are above the 500-year flood level and are termed "minimal flood hazard areas."
If a FIRM is believed to be incorrect, what can be done to change it?
Three procedures have been established for changing or correcting a flood map. They are: Letter of Map Amendment (LOMA), Letter of Map Revision (LOMR), and physical map revision.
What is a LOMA?
A LOMA is the result of an administrative procedure in which the Federal Insurance Administrator reviews scientific or technical data submitted by the owner or lessee of property who believes the property has incorrectly been included in a designated SFHA. A LOMA amends the currently effective FEMA map and establishes that a property is not located in a SFHA.
What comprises technical or scientific data?
In general, the scientific or technical data needed to effect a map amendment include certified topographic data and/or hydrologic and hydraulic analyses to support the request for amendment or revision.
What is a LOMR?
A LOMR is an official revision to the currently effective FEMA map. It is used to change flood zones, floodplain and floodway delineations, flood elevations, and planimetric features. All requests for LOMRs must be made to FEMA through the chief executive officer of the community, since it is the community that must adopt any changes and revisions to the map. A LOMR is usually followed by a physical map revision.
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