Work

Unusual Drainages of the Americas

Year: 2025

Type: article

Abstract: While most rivers and lakes follow predictable principles of hydrology and geology, a few seem to defy the rules. Some rivers diverge rather than converge; some rivers flow in two directions; some lakes have not one but two outlets; some watersheds have ambiguous boundaries. The scientific literature on these exceptions is sparse, scattered, and, in some cases, conflicting. We provide an authoritative review of nine unusual natural drainages in North and South America, including river bifurcations and bifurcation lakes: Casiquiare River, Arroyo Partido, Wayambo River, Atchafalaya River, North Two Ocean Creek, Divide Creek, Committee's Punch Bowl, Echimamish River, and Wollaston Lake. Most instances are found on flatlands and saddles. Some watershed boundaries are still unresolved or even dynamic, suggesting river formation in progress. We discuss the exploration, geophysical settings, morphology, hydrology, ecology, use, and management of these extraordinary drainages, along with implications for hydrologic modeling.

Source: Water Resources Research

DOI: 10.1029/2024wr039824

Authors: Robert B. Sowby, Adam C. Siegel

Institutions: Brigham Young University, University of Tennessee at Knoxville

Language: English

Topic: Hydrology and Watershed Management Studies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,000

Funder: Brigham Young University