“Wetlands are areas where water covers the soil or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the year.” (US EPA Website definition for sources list) For information on wetlands located in TxDOT ROW refer to the Water Resources section of TxDOT’s Environmental Affairs Division’s (ENV) . Occasionally, TxDOT may be required to design and construct wetlands as part of environmental mitigation.

Areas immediately along the roadway have frequently been altered from their original grade and yet may still qualify as wetlands. Per the U.S. Corps of Engineers, wetlands are "those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions." (Refer to TxDOT’s , Section 5: Wetlands/Streambed Permits, and the location’s District or Division environmental staff before proposing any design in these areas).

Refer to the ENV Division’s for mitigation requirements.