Manzano Springs CDP (part), Bernalillo County, New Mexico Environmental Rules: Coastal Development Rules (2026)

While no coastal zone applies in New Mexico, development near the Rio Grande is regulated through multiple overlapping authorities. The Middle Rio Grande Conservancy District (MRGCD) holds easements along the river levees and controls the irrigation ditch network — any crossing or bank work needs MRGCD approval. FEMA-mapped floodway along the Rio Grande (Zone AE/AO) prohibits any fill or structure that would raise the base flood elevation, enforced via Bernalillo County Ordinance Chapter 30 (Floodplain Management). The Bosque is a cottonwood/willow riparian forest managed under the 1993 Bosque Biological Management Plan; federal Section 404 Clean Water Act permits from the Army Corps of Engineers (Albuquerque District) are required for any fill in wetlands or waters of the U.S. Rio Grande Silvery Minnow (federally endangered) triggers ESA Section 7 consultation. Petroglyph National Monument and Sandia Pueblo boundaries add additional setbacks.