Abstract Hydrologic and geomorphic classifications have gained traction in response to the increasing need for basin‐wide water resources management. Regardless of selected classification scheme, an open scientific challenge is how extend information from limited field sites classify tens thousands millions channel reaches across a basin. To address this spatial scaling challenge, study leverages machine learning predict reach‐scale types using publicly available geospatial data. A bottom‐up...

ABSTRACT The mass and momentum exchange between the main channel floodplains impacts river systems' hydraulic, geomorphic, ecologic functions. Floodplain vegetation introduces additional flow resistance, significantly affecting fluxes. objectives of this study were to (1) quantify fluxes in presence using a two‐dimensional (2D) hydrodynamic model; (2) investigate varying degrees floodplain density on exchange; (3) advance conceptual understanding processes that control connections structure,...

Abstract The dynamic interaction between a river and its floodplain is important for variety of hydrologic, ecological, geomorphic processes. However, water management activities have widely disrupted the natural flow regime in many cases reduced connectivity. Recent environmental research has called techniques that incorporate hydrogeomorphic processes, which are ecological riverscape health. objective this study was to evaluate impacts hydrologic alterations on dynamics Changes inundation...

Abstract Reach‐scale morphological channel classifications are underpinned by the theory that each type is related to an assemblage of reach‐ and catchment‐scale hydrologic, topographic, sediment supply drivers. However, relative importance driver on reach morphology unclear, as possibility different assemblages yield same morphology. have never needed be predicated hydrology, yet hydrology controls discharge thus transport capacity. The scientific question is: do two or more regions with...

Abstract Lateral surface connectivity (LSC), defined here as the surficial component of hydrologic exchange flows perpendicular to longitudinal flow, is vital biogeochemical, geomorphological, and ecological processes on floodplains. Because rivers throughout much world have been subjected anthropogenic manipulation, LSC has greatly altered. While qualitative descriptions exist, only a limited number studies quantify this process. The objective study was mass momentum flux proxies for LSC....

Abstract Research regarding self‐maintenance of pool‐riffle river morphology has focused on hydraulics within individual couplets. Here, we make a scientific leap from one site to 702 couplets across northern California understand the frequency foundational velocity‐reversal hypothesis. A geometrical, mass and energy conservation‐based velocity reversal criterion was used predict occurrence reversal. Only 18% all met established criteria indicating At locations with riffle‐to‐pool bankfull...

This paper presents an analysis of two sampling methods used to examine population size and age structure freshwater crayfish in the River Nore catchment, Ireland. Results indicate high densities this river system (20-45 per in2). The combination employed (traps enclosures) provided data on all classes, reduced selectivity allowed estimates be made densities, including juveniles. Colin F. Byrne (corresponding author), Three Rivers Project, Suir Catchment, Clonmel, Co. Tipperary; Jane M....

Abstract Given the complex array of processes influencing river networks, conceptual frameworks rivers are critical to our understanding channel and response potential, as well restoration efforts. Yet despite their wide usage, many classifications based on limited observations over homogenous landscapes, raising questions about general applicability quantitative thresholds. Leveraging a large, transect‐based morphological field dataset across California, USA, we use data‐driven methods...

Abstract Clustering and machine learning‐based predictions are increasingly used for environmental data analysis management. In fluvial geomorphology, examples include predicting channel types throughout a river network segmenting networks into series of types, or groups forms. However, when relevant information is unevenly distributed network, the discrepancy between data‐rich data‐poor locations creates an gap. Combining clustering addresses this gap, but challenges limitations remain...

Reach-scale morphological channel classifications are underpinned by the theory that each type is related to an assemblage of reach- and catchment-scale hydrologic, topographic, sediment supply drivers. However, relative importance driver on reach morphology unclear, as possibility different assemblages yield same morphology. have never needed be predicated hydrology, yet hydrology controls discharge thus transport capacity. The scientific question is: do two or more regions with...

Earth and Space Science Open Archive This work was has been accepted for publication in Other. Version of RecordESSOAr is a venue early communication or feedback before peer review. Data may be preliminary. Learn more about preprints. preprintOpen AccessYou are viewing an older version [v1]Go to new versionReach-scale bankfull channel types can exist independently catchment hydrologyAuthors Colin Byrne iD Gregory Pasternack Hervé Guillon Belize Lane Samuel Sandoval Solis iDSee all authors...