As of 2020, in the regions where wall construction is taking place, this section of the law (Section 102) is having significant and measurable negative impacts on the natural and cultural heritage of the United States. One example is at Quitobaquito Springs in the Organ Pipe Cactus National Monument, Arizona. Quitobaquito Springs are home to the endangered Quitobaquito pupfish and the Sonoyta mud turtle. The spring and surrounding lands are sacred to the Hia-Ced O'odham and the Tohono O'odham. The spring is one of the only reliable above-ground water sources in the Sonoran Desert. Located 200 feet from the US-Mexico border and therefore construction of the border wall, the flow of water has declined precipitously since March 2020, and threatens the sacred cultural landscape as well as the two endangered species, along with many other desert animals and plants which rely on the water.