NKU-MAN

Morphometric Analysis in Google Earth Engine: An online interactive web-based application for global-scale analysis.

NKU-MAN Application

NKU-MAN User Guide

NKU-MAN GEE JavaScript Code

For contributions and comments: [email protected], [email protected]

Introduction:

For researchers focusing on watershed and streams morphometric analysis, extracting the morphometric parameters of a watershed and streams is a time-consuming process and requires computer hardware, GIS software resources and GIS expertise. Since river basins or watersheds are different in size and formation, terrain processing should be redone for each basin to obtain morphometric characteristics.

This application has been developed on the GEE platform where morphometric characteristics of watersheds and streams over the world can be obtained. This application is best viewed in 1920x1080 resolution

Important Note: Access to Google Earth Engine is currently only available to registered users.

• Earth Engine Homepage
• Web Code Editor

Here's an example screenshot of GUI:

How to customize your data sets:

var defaultCountry = "Turkey"

var DEM_items = [
{label:'VFDEM03',  value:ee.Image("WWF/HydroSHEDS/03VFDEM")},
{label:'CONDEM03', value:ee.Image("WWF/HydroSHEDS/03CONDEM")}, 
{label:'CONDEM15', value:ee.Image("WWF/HydroSHEDS/15CONDEM")}, 
{label:'CONDEM30', value:ee.Image("WWF/HydroSHEDS/30CONDEM")},
{label:'ALOS30',   value:ee.Image('JAXA/ALOS/AW3D30/V2_2').select(['AVE_DSM'],['b1'])},
{label:'MERIT', value:ee.Image("MERIT/DEM/v1_0_3").select(['dem'],['b1'])},
//https://gee-community-catalog.org/projects/hand/
//{label:'hand30_100', value:ee.ImageCollection("users/gena/global-hand/hand-100").mosaic().select(['b1'])},
{label:'hand30_1000', value:ee.Image("users/gena/GlobalHAND/30m/hand-1000")},
]

var ACC_items =  [
{label:'ACC15', value:ee.Image("WWF/HydroSHEDS/15ACC")}, 
{label:'ACC30', value:ee.Image("WWF/HydroSHEDS/30ACC")},
]

var DIR_items = [
{label:'DIR03', value:ee.Image("WWF/HydroSHEDS/03DIR")}, 
{label:'DIR15', value:ee.Image("WWF/HydroSHEDS/15DIR")}, 
{label:'DIR30', value:ee.Image("WWF/HydroSHEDS/30DIR")}, 
]


var basinDataset_items = [
  {label:'WWF HYDROSHEDS', value:'WWF_HYDROSHEDS'}, 
  {label:'USGS Watershed', value:'HUC'},
  {label:'Local Watershed Dataset', value:'LOCAL_WATERSHED'}, 
  ]


var hydroShed_items = [
{label:'Level 1', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_1")}, 
{label:'Level 2', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_2")}, 
{label:'Level 3', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_3")}, 
{label:'Level 4', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_4")},
{label:'Level 5', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_5")},   
{label:'Level 6', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_6")}, 
{label:'Level 7', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_7")}, 
{label:'Level 8', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_8")}, 
{label:'Level 9', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_9")},
{label:'Level 10', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_10")},   
{label:'Level 11', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_11")},   
{label:'Level 12', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/Basins/hybas_12")}
]

var HUC_items = [
{label:'HUC 02', value:ee.FeatureCollection("USGS/WBD/2017/HUC02")}, 
{label:'HUC 04', value:ee.FeatureCollection("USGS/WBD/2017/HUC04")}, 
{label:'HUC 06', value:ee.FeatureCollection("USGS/WBD/2017/HUC06")}, 
{label:'HUC 08',value:ee.FeatureCollection("USGS/WBD/2017/HUC08")}, 
{label:'HUC 10',value:ee.FeatureCollection("USGS/WBD/2017/HUC10")}, 
{label:'HUC 12',value:ee.FeatureCollection("USGS/WBD/2017/HUC12")}, 
]

var local_watershed_items = [
  {label:'DSI', value:ee.FeatureCollection("users/mynet34/1HAVZA/DSI_HYDRO22")}, 
  {label:'Watershed 1 km²', value:ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_1")}, 
  {label:'Watershed 10 km²', value:ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_10")}, 
  {label:'Watershed 25 km²', value:ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_25")}, 
  {label:'Watershed 50 km²', value:ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_50")},
  {label:'Watershed 100 km²', value:ee.FeatureCollection("users/mynet34/1HAVZA/4_CATCHMENT_100")},
  ]


var riverBasinDataset_items = [
  {label:'HydroRIVER V1.0', value:'HydroRIVER'}, 
  {label:'WWF Free Flowing River', value:'WWF_FFR'}, 
  {label:'Local Data Set', value:'LOCAL'}, 
  {label:'Other Global Data Sets', value:'DATASET3'}
  ]


var WWF_river_item =[
{label:'FreeFlowingRivers', value:ee.FeatureCollection("WWF/HydroSHEDS/v1/FreeFlowingRivers")}
]

var HydroRiver_item =[
{label:'HydroRIVERS_v10', value:ee.FeatureCollection('users/gena/HydroRIVERS_v10')},
//{label:'River 15s Level06', value:ee.FeatureCollection('users/gena/HydroEngine/riv_15s_lev06')},
//{label:'Natural Earth Rivers', value:ee.FeatureCollection('users/gena/NaturalEarthRivers')},
]


var Other_river_item =[
{label:'HydroRIVERS_v10', value:ee.FeatureCollection('users/gena/HydroRIVERS_v10')},
//{label:'River 15s Level06', value:ee.FeatureCollection('users/gena/HydroEngine/riv_15s_lev06')},
//{label:'Natural Earth Rivers', value:ee.FeatureCollection('users/gena/NaturalEarthRivers')},
]

var dreLine_items = [
  {label:'Dreinage Line 1', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_1")}, 
  {label:'Dreinage Line 10', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_10")}, 
  {label:'Dreinage Line 25', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_25")},
  {label:'Dreinage Line 50', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_50")}, 
  {label:'Dreinage Line 100', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_100")},
  {label:'Dreinage Line 50_GRID_CODE', value:ee.FeatureCollection("users/mynet34/1HAVZA/2_DRAINAGELINE_50_GRID_CODE")},
  {label:'MERGED_GRID_CODE', value:ee.FeatureCollection("users/mynet34/1HAVZA/MERGED_GRIDCODE")}  
  ]