Natural and beneficial functions of floodplain
- Floods are natural processes.
- Throughout time they have shaped the landscape, provided habitat for wildlife, and created rich soils.
- A floodplain is the lowland adjacent to a river, lake, creek, or ocean.
- Floods happen when runoff exceeds the capacity of the river, stream channel or lake.
- Water overflows onto the nearby low-lying lands, called floodplains.
- In hilly and mountainous areas, flooding is likely to be rapid, deep and dangerous.
- When people use flood-prone areas along rivers, streams and lakes, their homes, businesses and activities get in the way of the natural overflow of the waterway.
- Sooner or later, they will be damaged or destroyed.
- The buildings, pavement, landscaping, roads and other facilities take up space in the normal floodplain that is needed to carry extra water during a flood.
- This forces the flood water to move farther away from the natural waterway, flooding more land.
- It sometimes also increases the velocity and height of the floodwater.
- There may be flood hazard areas along the smaller streams and watercourses that have not been identified or mapped through a study of its flood problems.
- New development can increase water run-off, causing flooding in places that have never been flooded before.
- Additional flood problems result from water runoff or its accumulation in low-lying areas.
- Development may make the situation worse.
- Floodplains are also critical wildlife and natural habitat areas; these areas need to be protected.
- The beauty of the river is inviting.
- Many people chose to live in Colorado for its outdoor appeal.
- If you live close to a river or creek, you might be in a floodplain area.
- If you believe you live in a floodplain area, or if you're not sure, please check with the county before beginning any improvements or construction on your property.
Natural functions of Floodplains
- Natural or relatively undisturbed floodplains
- Limit flooding naturally, by temporarily storing flood waters.
- Maintain water quality by filtering sediments, nutrients, and impurities.
- Preserve and recharge groundwater supply.
- Support natural vegetation.
- Provide fish and wildlife habitat.
- Provide many kinds of recreational opportunities.
- Provide places for outdoor education and scientific study.
