nldi-flowtools 0.2.2

NLDI Flowtools

NLDI Flowtools

NLDI Flowtools provides basin delineation and flow path tracing services.

Documentation

Check out our documentation on Read the Docs: https://nldi-flowtools.readthedocs.io/en/latest/

Requirements

Rasterio must be installed prior to installing NLDI-Flowtools.

• python = ">=3.9, <3.10"
• click = ">=7.1.2, <8"
• geojson = "^2.5.0"
• numpy = "^1.21.0"
• pyflwdir = "0.5.1"
• pyproj = "^3.3.0"
• rasterio = "^1.2.9"
• requests = "^2.26.0"
• Shapely = "^1.8.0"

Installation

You can install NLDI-Flowtools via pip from PyPI:

$ pip install nldi-flowtools

Features

• The Splitcatchment function delineates the drainage basin which is upstream from the input x,y point. Splitcatchment will return two polygons in geojson; the local National Hydrography Dataset (NHD) catchment which the input point falls in, and either the entire upstream drainage basin of that point or only the portion of the local catchment which drains to that point.
• The Flowtrace function traces the flowpath of water from the input point to the nearest NHD stream. Flowtrace returns two geojson linestrings; the first is the flow path which water will follow from the input point to the first down hill NHD stream, and the second linestring could be either the entire or the downstream or upstream segment of the NHD stream.

Usage

In a python enviroment, first import nldi-flowtools, then either the Splitcatchment or Flowtrace function can be used.

from nldi_flowtools.nldi_flowtools import splitcatchment, flowtrace

splitcatchment(-93, 45, True)
flowtrace(-93, 45, 'down')

The output:

{"features": [{"geometry": {"coordinates": [[[-93.004705, 44.992876], [-93.005282, 44.993016], [-93.005109, 44.994369], [-93.006721, 44.994937], [-93.009142, 44.995942], [-93.010043, 44.997435], [-93.01047, 44.998566], [-93.00983, 45.000034], [-93.012506, 45.002472], [-93.015846, 45.002357], [-93.016935, 45.00331], [-93.017277, 45.00575], [-93.018238, 45.006374], [-93.019473, 45.007456], [-93.016408, 45.009028], [-93.015893, 45.010429], [-93.014668, 45.010784], [-93.014747, 45.011952], [-93.017769, 45.011633], [-93.024573, 45.011535], [-93.027889, 45.012941], [-93.030205, 45.013294], [-93.030629, 45.014416], [-93.031776, 45.01516], [-93.032286, 45.015607], [-93.03194, 45.015903], [-93.031281, 45.016242], [-93.030671, 45.016766], [-93.028489, 45.017341], [-93.029079, 45.019437], [-93.025706, 45.019864], [-93.027294, 45.021279], [-93.027602, 45.021859], [-93.028008, 45.022373], [-93.028302, 45.023537], [-93.029097, 45.023471], [-93.030359, 45.024179], [-93.029554, 45.025062], [-93.030217, 45.026375], [-93.03126, 45.026981], [-93.030364, 45.029799], [-93.032025, 45.030167], [-93.032406, 45.030175], [-93.0322, 45.030856], [-93.031748, 45.031644], [-93.03232, 45.032858], [-93.029743, 45.033604], [-93.029815, 45.034658], [-93.027702, 45.036288], [-93.0263, 45.035378], [-93.025943, 45.033684], [-93.025622, 45.031789], [-93.024873, 45.032021], [-93.024379, 45.032741], [-93.022772, 45.033119], [-93.021788, 45.032783], [-93.021157, 45.03223], [-93.017605, 45.032519], [-93.016224, 45.033025], [-93.013402, 45.031829], [-93.01119, 45.031653], [-93.01077, 45.032538], [-93.010336, 45.033047], [-93.009851, 45.034901], [-93.007994, 45.035581], [-93.005658, 45.035661], [-93.004533, 45.035572], [-93.002982, 45.036141], [-93.001036, 45.036346], [-93.000267, 45.03716], [-92.998096, 45.038054], [-92.996288, 45.039504], [-92.996324, 45.040036], [-92.995239, 45.041315], [-92.994292, 45.044434], [-92.993428, 45.045099], [-92.992685, 45.045523], [-92.993941, 45.045954], [-92.995019, 45.046898], [-92.996678, 45.047975], [-92.995529, 45.048632], [-92.994894, 45.049558], [-92.993564, 45.050584], [-92.991463, 45.050305], [-92.990913, 45.050147], [-92.989704, 45.049861], [-92.988957, 45.048568], [-92.987572, 45.048094], [-92.988003, 45.047583], [-92.989156, 45.046925], [-92.989054, 45.045423], [-92.989749, 45.044602], [-92.989353, 45.039199], [-92.988922, 45.038918], [-92.989095, 45.038771], [-92.991664, 45.038093], [-92.99246, 45.036834], [-92.993813, 45.035626], [-92.993457, 45.034662], [-92.992063, 45.03385], [-92.991988, 45.033396], [-92.993936, 45.032882], [-92.995826, 45.031915], [-92.996018, 45.031162], [-92.995301, 45.030256], [-92.99576, 45.028457], [-92.995008, 45.027034], [-92.994565, 45.026475], [-92.993626, 45.024614], [-92.995175, 45.023822], [-92.994377, 45.023007], [-92.993673, 45.022114], [-92.992117, 45.022384], [-92.99068, 45.022746], [-92.989463, 45.022591], [-92.98908, 45.022622], [-92.988346, 45.022529], [-92.986211, 45.022898], [-92.984867, 45.024364], [-92.984216, 45.026253], [-92.982467, 45.025346], [-92.982309, 45.021084], [-92.981626, 45.019727], [-92.983246, 45.018395], [-92.983165, 45.017884], [-92.983407, 45.016933], [-92.982194, 45.015697], [-92.981423, 45.01423], [-92.980294, 45.013573], [-92.980431, 45.013026], [-92.979182, 45.012453], [-92.97737, 45.012222], [-92.976843, 45.013409], [-92.974682, 45.012643], [-92.975662, 45.010851], [-92.978939, 45.009987], [-92.979181, 45.009038], [-92.977167, 45.007864], [-92.976357, 45.006262], [-92.976527, 45.005596], [-92.976383, 45.004699], [-92.977253, 45.00395], [-92.978794, 45.00334], [-92.980416, 45.003547], [-92.981537, 45.003264], [-92.983643, 45.002999], [-92.984898, 45.001627], [-92.984371, 45.000631], [-92.983744, 45.000264], [-92.983425, 44.999952], [-92.984012, 44.999618], [-92.985005, 44.996917], [-92.98493, 44.995805], [-92.985013, 44.995279], [-92.986567, 44.993964], [-92.987134, 44.993134], [-92.98868, 44.993257], [-92.991361, 44.993165], [-92.993003, 44.993863], [-92.99399, 44.993828], [-92.99494, 44.993904], [-92.996622, 44.993846], [-92.997408, 44.993242], [-93.000138, 44.994857], [-93.001534, 44.994808], [-93.002847, 44.993796], [-93.003737, 44.993539], [-93.004283, 44.993116], [-93.004705, 44.992876]]], "type": "Polygon"}, "id": "catchment", "properties": {"catchmentID": "1100118"}, "type": "Feature"}, {"geometry": {"coordinates": [[[-93.002465, 45.000378], [-93.002477, 45.000109], [-93.002096, 45.000101], [-93.002108, 44.999831], [-92.999442, 44.999772], [-92.999454, 44.999502], [-92.999074, 44.999494], [-92.999086, 44.999224], [-92.998705, 44.999216], [-92.998717, 44.998946], [-92.998336, 44.998938], [-92.998288, 45.000015], [-92.998669, 45.000024], [-92.998657, 45.000293], [-93.002465, 45.000378]]], "type": "Polygon"}, "id": "splitCatchment", "properties": {}, "type": "Feature"}], "type": "FeatureCollection"}
{"features": [{"geometry": {"coordinates": [[-93.008717, 45.016322], [-93.009233, 45.016346], [-93.009942, 45.016507], [-93.010779, 45.016896], [-93.011134, 45.016942], [-93.01194, 45.016829], [-93.012714, 45.016578], [-93.013326, 45.016579], [-93.013745, 45.016716], [-93.01426, 45.017082], [-93.014292, 45.017243], [-93.01455, 45.017357], [-93.015807, 45.017427], [-93.016033, 45.017496], [-93.016644, 45.017885], [-93.01716, 45.018091], [-93.018159, 45.01839], [-93.019158, 45.018642], [-93.021253, 45.01853], [-93.021544, 45.018324], [-93.022028, 45.017776], [-93.022287, 45.01757], [-93.022673, 45.017571], [-93.023027, 45.017822], [-93.023221, 45.018051], [-93.023252, 45.01844], [-93.02325, 45.019606], [-93.023056, 45.020086], [-93.023054, 45.020909], [-93.023311, 45.021367], [-93.023665, 45.021733], [-93.02373, 45.021893], [-93.023761, 45.022487], [-93.023857, 45.022625], [-93.024373, 45.02274], [-93.025405, 45.022832], [-93.025823, 45.023038], [-93.025984, 45.023267], [-93.026015, 45.02425], [-93.026079, 45.024365], [-93.026046, 45.024479], [-93.026207, 45.024662], [-93.027624, 45.025692], [-93.02901, 45.026356], [-93.029815, 45.026654], [-93.030266, 45.026723], [-93.030782, 45.026678]], "type": "LineString"}, "id": "downstreamFlowline", "properties": {"comid": 1100118, "gnis_name": "none", "intersection_point": [45.016322, -93.008717], "measure": 71.31, "raindrop_pathDist": 2550.69, "reachcode": "07010206000564"}, "type": "Feature"}, {"geometry": {"coordinates": [[-93.000007, 44.999919], [-93.000388, 44.999928], [-93.000769, 44.999936], [-93.00115, 44.999945], [-93.001531, 44.999953], [-93.001911, 44.999962], [-93.00228, 45.000239], [-93.002661, 45.000248], [-93.003042, 45.000257], [-93.003423, 45.000265], [-93.003803, 45.000273], [-93.004184, 45.000282], [-93.004565, 45.00029], [-93.004553, 45.00056], [-93.004541, 45.000829], [-93.004529, 45.001099], [-93.004517, 45.001368], [-93.004505, 45.001638], [-93.004874, 45.001916], [-93.005255, 45.001924], [-93.005635, 45.001933], [-93.005623, 45.002202], [-93.005992, 45.00248], [-93.00598, 45.00275], [-93.006349, 45.003028], [-93.006337, 45.003297], [-93.006706, 45.003575], [-93.006694, 45.003844], [-93.006682, 45.004114], [-93.00667, 45.004383], [-93.006658, 45.004653], [-93.006646, 45.004922], [-93.006634, 45.005192], [-93.006241, 45.005453], [-93.005848, 45.005714], [-93.005836, 45.005983], [-93.005443, 45.006244], [-93.005431, 45.006514], [-93.0058, 45.006792], [-93.006169, 45.00707], [-93.006538, 45.007348], [-93.006526, 45.007617], [-93.006514, 45.007886], [-93.006502, 45.008156], [-93.00649, 45.008425], [-93.006478, 45.008695], [-93.006466, 45.008964], [-93.006835, 45.009242], [-93.006823, 45.009512], [-93.006811, 45.009781], [-93.006799, 45.010051], [-93.006787, 45.01032], [-93.006775, 45.01059], [-93.006763, 45.010859], [-93.006751, 45.011129], [-93.00712, 45.011406], [-93.007488, 45.011684], [-93.007476, 45.011954], [-93.007464, 45.012223], [-93.007452, 45.012493], [-93.007821, 45.012771], [-93.00819, 45.013049], [-93.008178, 45.013318], [-93.008166, 45.013588], [-93.008154, 45.013857], [-93.008535, 45.013866], [-93.008142, 45.014127], [-93.007749, 45.014388], [-93.007356, 45.014649], [-93.007344, 45.014918], [-93.007332, 45.015188], [-93.00732, 45.015457], [-93.007308, 45.015726], [-93.007296, 45.015996], [-93.007665, 45.016274], [-93.008046, 45.016282], [-93.008427, 45.016291], [-93.008717, 45.016322]], "type": "LineString"}, "id": "raindropPath", "properties": {}, "type": "Feature"}], "type": "FeatureCollection"}

Contributing

Contributions are very welcome. To learn more, see the Contributor Guide_.

License

Distributed under the terms of the CC0 1.0 Universal license, NLDI Flowtools is free and open source software.

Issues

If you encounter any problems, please file an issue along with a detailed description.

Authors

Anders Hopkins - Lead Developer - USGS Web Informatics & Mapping

Credits

This project was generated from @hillc-usgs's Pygeoapi Plugin Cookiecutter template.

Acknowledgments

• This toolset was originally forked from @marsmith's repo ss-delineate.
• For the actual hydrologic delineations, we use the package Pyfwldir.
• This project was done in colaboration with @rmcd's NLDI XStools.
• The flow direction raster used for the delineations was put together as a cloud optimized geotiff and hosted it in AWS S3 by @dblodgett.