How long is a wetland delineation valid?

Once a wetland delineation is completed, one common question that arises is: How long is it valid? The answer to this question can vary depending on the regulatory requirements and the specific circumstances of the delineation.

In general, a wetland delineation is considered valid for five years from the date of completion. This means that the delineation can be used for regulatory purposes, such as obtaining permits or planning land use activities, for up to five years after it was conducted.

But here's the kicker: if there are any significant changes in the area, like alterations in the hydrology, vegetation, or soil composition, you might need to get a new delineation done. The validity of a wetland delineation can be affected by changes in the landscape or other factors that may alter the wetland boundaries or characteristics. If significant changes occur in the area, a new delineation may be required to ensure accurate mapping of wetland boundaries.

Additionally, some regulatory agencies may have specific requirements regarding the validity of wetland delineations. For example, the U.S. Army Corps of Engineers (USACE) may require a new delineation if there have been changes in the methodology or criteria used for delineating wetlands since the original delineation was conducted.

If you're unsure about whether your delineation is still valid, or if you need an updated wetland delineation or verification, don't hesitate to contact us. Our team of experts is here to help!