Levees are not subject to consistent standards for design, construction, operations, and maintenance, and it is not easy to tell how a levee will perform in a flood by observation alone. While levees under the authority of the Corps of Engineers are regularly inspected and assessed for their level of protection, this may represent only a small fraction — an estimated 15% of the total levees in the United States.
Levees function as part of a system — what is happening upstream and downstream matters. A levee in a rural agricultural area may be designed to overtop in order to release floodwaters before it reaches levees protecting a larger population where flood damages may be greater. Even the unexpected breach or levee failure in one part of the system may reduce the pressure and save a levee in the system from failing in another section.
For More Information:
• “Corps Concepts” videos explain levees and levee terms
• So, You Live Behind a Levee! covers issues such as flood size and risk, signs of trouble, ways to reduce risk, and how to prepare for and respond to emergencies
• View or download your Flood Hazard map from FEMA’s Map Service Center
This information and reference suggestions are provided by the U.S. Army Corps of Engineers
Using Flood Water for Managed Aquifer Recharge to Support Sustainable Water Resources
Flood-MAR is an integrated and voluntary resource management strategy that uses flood water resulting from, or in anticipation of, rainfall or snowmelt for groundwater recharge on agricultural lands and working landscapes, including but not limited to refuges, floodplains, and flood bypasses.
The flood protection and groundwater management communities have traditionally worked independent of each other. In some respects, this has been done by design, such as flood protection agencies working to keep flood waters off property, while leaving groundwater management to local water agencies and landowners. With the passage and implementation of SGMA, in combination with climate-induced extreme events, the logic for these communities to partner and integrate is becoming clear and imperative. This partnership will help reduce the impacts of future swings between high- and low flow periods while meeting their communities’ objectives, with the bonus of improving floodplain ecosystems, preserving working landscapes, and engaging California’s agricultural community in needed solutions, among other benefits.
Flood-MAR epitomizes integrated water management.
The concept is designed to be multi-benefit—providing flood risk reduction, drought preparedness, aquifer replenishment, ecosystem enhancement, and other potential benefits. It is also a promising climate change adaptation strategy that takes an integrated approach to help address two of the most challenging elements of future climate changes: more flashy/intense flood flows, and longer/deeper droughts. In addition, agricultural lands and working landscapes are assets as they become effective and essential pathways to storage. In practice, projects will need to be carefully planned, operated, and designed to achieve these important benefits.
Flood-MAR can be implemented at multiple scales, from individual landowners diverting flood water with existing infrastructure, to using extensive detention/recharge areas and modernizing flood protection infrastructure/operations. Achieving Flood-MAR’s potential and value for California will need integration into the broader water system. Integrating Flood-MAR with other regional recharge efforts, changing management of California’s water system to better integrate surface water and groundwater, upgrading conveyance, storage and operations, and considering FloodMAR’s opportunities as related to water transport and transfers are some of the system integration considerations.
Information provided by the California Department of Water Resources
Flood-MAR White Paper, June 2018
How to Plan for Floods
Flooding is a serious environmental reality that can cause significant damage to homes and the environment. The effects that flooding can have on individuals and communities makes it vital to understand the potential risk and make necessary preparations for mitigating the impacts of flooding. You’ll need to plan for two situations: remaining in your home after a disaster or evacuating to a safer location.
Have a three-day supply of food and water on hand – plan for at least one gallon of water per person per day and food that will not spoil. Keep a manual can opener and emergency tools including a fire extinguisher, battery-powered radio, flashlight and plenty of batteries.
Checklist: Here is an idea of what to gather to ensure your family’s basic comfort and well-being in case of an emergency evacuation.
• Cash – banks and ATMs may not be open for extended periods
• Water – at least one gallon per person, per day for three to seven days, plus water for pets
• Food – at least enough for three to seven days, including: non-perishable, packaged or canned food and juices, food for infants and the elderly, snack food, non-electric can opener, vitamins, paper plates, plastic utensils
• Radio – battery powered and NOAA weather radio with extra batteries
• Blankets, pillows, etc.
• Clothing – seasonal, rain gear, sturdy shoes
• First aid kit – plus medicines, prescription drugs
• Special items – for babies and the elderly, including medicines, formula, bottles, and baby food
• Toiletries – hygiene items, moisture wipes, sanitizer
• Flashlight(s) and batteries
• Toys, books, games
• Pet care items – proper identification, immunization records, ample food and water, medicine, a carrier or cage, leash
Flood information provided by Project WET – www.projectwet.org
And US Army Corps of Engineers
Madera County Sediment Removal Permit – Now Available
The purpose of this permit is to allow the removal of foreign sediment deposits and
assist Madera County with maintenance of the dedicated flood ways. This permit is
limited to the Ash Slough and Berenda Slough within the limits shown on the attached
maps in which the County is the Local Maintaining Agency and has easement rights for
channel maintenance. The activities permitted herein are activities that are outlined in
the Clean Water Act 404 (f) and are therefore exempt from the need to obtain 404
permits. They are also in compliant with, and incorporate, the requirements of the
attached 1602 California Department of Fish and Wildlife permit.
The County of Madera has compiled all of these provisions and permit requirements
into one over the counter issued permit for the purpose of public education and
streamlining a process that benefits Madera County constituents.
1. Please contact Dario Dominguez at 559‐675‐7703 extension 2359 if you
have any questions or need any additional information.
2. Permit will typically be issued OVER THE COUNTER.
3. There will be NO FEE for permit.
It is important to comply with these requirements, so that State and Federal Agencies
can continue to trust in local government and preserve our ability work together locally.
Legislation drafted by the State of California, and enforced by Government Code Sections 65302, 65560, and 65800, confer upon local government units authority to adopt regulations designed to promote the public health, safety, and general welfare of its citizenry. Therefore, Madera County Flood Control & Water Conservation Agency does hereby adopt the following floodplain management regulations.
Finding of Fact
The flood hazard areas of the County of Madera are subject to periodic inundation which results in loss of life and property, health and safety hazards, disruption of commerce and governmental services, extraordinary public expenditures for flood protection and relief, and impairment of the tax base, all of which adversely affect the public health, safety, and general welfare.
These flood losses are caused by uses that are inadequately elevated, flood proofed, or protected from flood damage. The cumulative effect of obstruction in areas of special flood hazards which increase flood height and velocities also contribute to the flood loss.
Statement of Purpose
As established by ordinance and to promote the public health, safety, and general welfare, and to minimize public and private losses due to flood conditions in specific area by provisions designed to:
- Protect human life and health
- Minimize expenditure of public money for costly flood control projects
- Minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public
- Minimize prolonged business interruptions
- Minimize damage to public facilities and utilities such as water and gas mains; electric, telephone and sewer lines; and street and bridges located in areas of special flood hazard
- Help maintain a stable tax base by providing for the sound and development of areas of special flood hazard so as to minimize future blighted areas caused by flood damage
- Ensure that potential buyers are notified that the property is in an area of special flood hazard
- Ensure that those who occupy the area of special flood hazard assume responsibility for their actions.
El Niño Flood Risks Fact Sheet
El Niño Flood Risks Fact Sheet
County Wide Sandbag Locations
Methods of Reducing Flood Losses
In order to accomplish its purposes, this ordinance includes methods and provisions to:
- Restrict or prohibit uses which are dangerous to health, safety, and property due to water or erosion hazards, or which result in damaging increases in erosion or flood height or velocities
- Require that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction
- Control the alteration of natural floodplains, streams channels, and natural protective barriers, which help accommodate or channel flood waters
- Control filling, grading dredging, and maintenance of levees and other development which may increase flood damage
- Prevent or regulate the construction of flood barriers which will unnaturally divert flood waters or which may increase flood hazards in other areas.
The County of Madera has adopted the following water related Studies and Plans:
Master Drainage Plan: Gill & Pulver Study – Master Drainage Plan for Madera Ranchos, Bonadelle Ranchos and Root Creek
Integrated Regional Water Management Plan
Madera Regional Groundwater Management Plan
Stormwater Resource Plan
The County of Madera receives calls on a daily basis from property owners who wish to find out if their property is located within a flood zone. Flood zone maps are continually being updated and changed by FEMA. Persons wishing information on a parcel will need to call our office, at (559) 675-7811.
If you are looking for Flood Zone Elevation Certificate or information you may go to the FEMA website at: http://www.fema.gov/ for information and instruction on flood zones and forms.
Fema Information For
Drainage Design Standards– Rainfall Data
Elevation Certificate and Instructions
Homeowners and Renters
Insurance Professionals and Lenders
MT-1 Application Forms and Instructions