Army Corps of Engineers Releases Updated National Wetland Plant List
The Army Corps of Engineers (Corps) recently published a notice in the Federal Register announcing the availability of the final 2022 National Wetland Plant List (2022 NWPL). The 2022 NWPL went into effect Feb. 13, 2024.
The 2022 NWPL update includes two listed species: Isocoma menziesii (Menzies’ goldenbush) and Populus fremontii (Frémont’s cottonwood). According to the Corps, these species are typically found in the Arid West. In total, the 2022 NWPL includes 8,115 species.
The NWPL contains wetland indicator status ratings for individual plant species. The ratings are used in determining whether the hydrophytic vegetation factor is met when conducting wetland delineations under the Clean Water Act and wetland determinations under the Wetland Conservation Provisions of the Food Security Act (Farm Bill).
Other applications of the NWPL include wetland research, the development of restoration and compensatory mitigation goals, and the provision of general botanical information about wetland plants.
The NWPL is an interagency effort led by the Corps and supported by the Environmental Protection Agency, Fish and Wildlife Service, and Dept. of Agriculture - Natural Resources Conservation Service.
Latest from NAHBNow
Financing
Nov 04, 2025
Mortgage Rates Reach Lowest Average in Over Than a YearMortgage rates in October fell to their lowest average in over a year. According to Freddie Mac, the 30-year fixed-rate mortgage averaged 6.25% in October, 10 basis points (bps) lower than in September and 17 bps lower than a year ago.
Codes and Standards
Nov 03, 2025
Delaware Pauses State Energy Code Overhaul After HBA's ConcernsLast week, Gregory Patterson, Secretary of the Delaware Department of Natural Resources and Environmental Control (DNREC), wrote to building industry stakeholders that he was declining to approve the Department’s own proposal to create one of the most aggressive energy codes in the country.
Latest Economic News
Economics
Nov 04, 2025
The International Builders’ Show: The Leading Economic Forecast Event of the YearEvery year, NAHB and other industry experts and economists bring their latest insights to the NAHB International Builders’ Show® (IBS). For 2026, IBS offers an unparalleled lineup of IBS Education sessions that cover every sector of the housing industry: single-family, multifamily, remodeling, design trends, and building materials.
Economics
Nov 03, 2025
Laundry Room Locations in New Homes and Apartments, 2024In 2024, most new single-family homes included laundry connections on the first floor (70%), according to the Census Bureau’s Survey of Construction. The first floor is also where most customers prefer to have the laundry, as shown in Chapter 2 of What Home Buyers Really Want.
Economics
Oct 31, 2025
Lowest Mortgage Rates in Over a Year in OctoberAverage mortgage rates in October trended downward to the lowest rates in over a year. According to Freddie Mac, the 30-year fixed-rate mortgage averaged 6.25% in October, 10 basis points (bps) lower than September.