An S4 class and several functions which utilize internally stored
    datasets and gauging data enable 1d water level interpolation. The S4 class
    (WaterLevelDataFrame) structures the computation and visualisation
    of 1d water level information along the German federal waterways Elbe and
    Rhine. 'hyd1d' delivers 1d water level data - extracted from the 'FLYS'
    database - and validated gauging data - extracted from the hydrological
    database 'HyDaBa' - package-internally. For computations near real time
    gauging data are queried externally from the 'PEGELONLINE REST API' 
    <https://pegelonline.wsv.de/webservice/dokuRestapi>.

Raster based flood modelling internally using 'hyd1d', an R package
    to interpolate 1d water level and gauging data. The package computes flood
    extent and durations through strategies originally developed for 'INFORM',
    an 'ArcGIS'-based hydro-ecological modelling framework. It does not provide
    a full, physical hydraulic modelling algorithm, but a simplified, near real
    time 'GIS' approach for flood extent and duration modelling. Computationally
    demanding annual flood durations have been computed already and data
    products were published by Weber (2022) <doi:10.1594/PANGAEA.948042>.

Calculate an optimal embedding of a set of data points into low-dimensional hyperbolic space. This uses the strain-minimizing hyperbolic embedding of Keller-Ressel and Nargang (2019), see <arXiv:1903.08977>.

Functions for basic hydraulic calculations related to 
    water flow in circular pipes both flowing full (under pressure), and 
    partially full (gravity flow), and trapezoidal open channels. For 
    pressure flow this includes friction loss calculations by solving 
    the Darcy-Weisbach equation for head loss, flow or diameter, 
    plotting a Moody diagram, matching a pump characteristic curve to a system 
    curve, and solving for flows in a pipe network using the Hardy-Cross method. 
    The Darcy-Weisbach friction factor is calculated using the Colebrook 
    (or Colebrook-White equation), the basis of the Moody diagram, the original 
    citation being Colebrook (1939) <doi:10.1680/ijoti.1939.13150>. For gravity 
    flow, the Manning equation is used, again solving for missing parameters. 
    The derivation of and solutions using the Darcy-Weisbach equation and the
    Manning equation are outlined in many fluid mechanics texts such as 
    Finnemore and Maurer (2024, ISBN:978-1-264-78729-6). Some gradually- and 
    rapidly-varied flow functions are included. For the Manning equation
    solutions, this package uses modifications of original code from the 'iemisc' 
    package by Irucka Embry.