{"id":1120,"date":"2026-11-04T10:06:01","date_gmt":"2026-11-04T09:06:01","guid":{"rendered":"https:\/\/dronesystems.dk\/?page_id=1120"},"modified":"2026-11-05T11:49:10","modified_gmt":"2026-11-05T10:49:10","slug":"environmental-surveys","status":"publish","type":"page","link":"https:\/\/dronesystems.dk\/en\/environmental-surveys\/","title":{"rendered":"Environmental Surveys"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1120\" class=\"elementor elementor-1120 elementor-1085\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e5e0a01 e-con-full e-flex e-con e-parent\" data-id=\"e5e0a01\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e5e0a02 elementor-widget elementor-widget-html\" data-id=\"e5e0a02\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<link 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.cta::before{content:\"\";position:absolute;inset:0;background:rgba(0,0,0,.5)}\n.ds-env .cta .wrap{position:relative;padding-block:70px 80px;display:grid;gap:20px;justify-items:center}\n.ds-env .cta h2{font-size:clamp(44px,8vw,96px);color:var(--chalk)}\n.ds-env .cta .who{font-size:16px}\n.ds-env .cta .who b{font-family:var(--display);text-transform:uppercase;letter-spacing:.04em}\n.ds-env .foot .wrap{padding-block:26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#5a5f64}\n.ds-env .note{background:#fff8e6;color:#5b4a12;font-size:13px;text-align:center;padding:8px 16px}\n@media (prefers-reduced-motion:reduce){.ds-env *{transition:none!important}\n}\n\n<\/style>\n<div class=\"ds-env\">\n<section class=\"hero\"><div class=\"wrap\">\n  <p class=\"eyebrow\">Drone Systems<\/p>\n  <h1><span class=\"outline\">Environmental<\/span><br>Surveys<\/h1>\n  <p class=\"lead\">Contactless drone surveys of rivers and streams: water surface elevation, riverbed geometry, flow velocity and discharge. Developed and tested in the EU project UAWOS, now offered as a service by Drone Systems.<\/p>\n  <div><a class=\"btn light\" href=\"#ydelser\">See the four services<\/a><\/div>\n<\/div><\/section>\n\n<section class=\"intro\"><div class=\"wrap\">\n  <div class=\"text\">\n    <h2>Surveys without touching the water<\/h2>\n    <p class=\"lead\">Traditional river surveys require people in the water, a boat or access to the bank at every cross-section. Our drones measure the water surface, the bed and the flow velocity from the air with RTK precision, also where there is no path, bridge or gauging station. The result is data that can go straight into hydraulic models, checks against the watercourse regulations and flood mapping.<\/p>\n    <p>The methods are documented in four survey protocols (UAWOS D3.1\u2013D3.4) and tested on rivers in Denmark, Sweden, Germany and Italy. The first commercial job was delivered to Wasserwirtschaftsamt Weilheim, on the Lech, in February 2026.<\/p>\n  <\/div>\n  <div class=\"stats\" aria-label=\"Key figures\">\n    <div class=\"stat\"><b>3 cm<\/b><span>Accuracy, water surface elevation<\/span><\/div>\n    <div class=\"stat\"><b>10 cm<\/b><span>Accuracy, riverbed geometry<\/span><\/div>\n    <div class=\"stat\"><b>0.1 m\/s<\/b><span>Accuracy, surface velocity<\/span><\/div>\n    <div class=\"stat\"><b>15%<\/b><span>Accuracy, discharge<\/span><\/div>\n  <\/div>\n<\/div><\/section>\n\n<section class=\"tiles\" id=\"ydelser\"><div class=\"wrap\">\n    <div class=\"cards\">\n    <article class=\"card\" id=\"wse\">\n      <div class=\"card-img\" style=\"background-image:url(https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/fig_wse.jpg)\"><h3>Water surface elevation<\/h3><\/div>\n      <div class=\"card-body\">\n        <p>The drone follows the river with a radar altimeter and records the water surface continuously. The result is a water-level profile along the centerline with the water surface slope, ready for hydraulic modelling and water-level checks.<\/p>\n        <p class=\"spec\">Spacing under 1 m \u00b7 accuracy 3 cm \u00b7 10\u201345 m flight altitude \u00b7 delivered as CSV and profile plots in your vertical datum<\/p>\n        <a class=\"btn\" href=\"https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/DS_WSE_survey_onepager_v1.1.pdf\" target=\"_blank\" rel=\"noopener\">Datasheet (PDF)<\/a>\n      <\/div>\n    <\/article>\n    <article class=\"card\" id=\"geo\">\n      <div class=\"card-img\" style=\"background-image:url(https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/fig_geometry.jpg)\"><h3>Riverbed geometry<\/h3><\/div>\n      <div class=\"card-body\">\n        <p>One complete cross section from bank to bank with three sensors on the drone: LiDAR maps the banks, floodplain and the dry part of the bed as a terrain model, and below the water either a water-penetrating radar or an echosounder, chosen for the river\u2019s conductivity and flow. All of it is merged into one cross section. The terrain model is also delivered on its own for the whole corridor.<\/p>\n        <p class=\"spec\">Accuracy 10 cm above and below water \u00b7 LiDAR 1\u20134 km of river per hour, bed 0.75\u20132 sections per hour \u00b7 cross sections, bed points, point cloud and DTM<\/p>\n        <a class=\"btn\" href=\"https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/DS_Riverbed_geometry_onepager_v2.pdf\" target=\"_blank\" rel=\"noopener\">Datasheet (PDF)<\/a>\n      <\/div>\n    <\/article>\n    <article class=\"card\" id=\"vel\">\n      <div class=\"card-img\" style=\"background-image:url(https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/fig_velocity.jpg)\"><h3>Flow velocity<\/h3><\/div>\n      <div class=\"card-body\">\n        <p>A Doppler radar measures the surface velocity while the drone hovers 4 m above the water at a series of points across the section. No wading, no boat, and it can be done at high flow.<\/p>\n        <p class=\"spec\">Accuracy 0.1 m\/s \u00b7 velocity distribution per cross section \u00b7 CSV and plots<\/p>\n        <a class=\"btn\" href=\"https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/DS_Flow_velocimetry_onepager_v1.1.pdf\" target=\"_blank\" rel=\"noopener\">Datasheet (PDF)<\/a>\n      <\/div>\n    <\/article>\n    <article class=\"card\" id=\"dis\">\n      <div class=\"card-img\" style=\"background-image:url(https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/fig_discharge.jpg)\"><h3>Discharge<\/h3><\/div>\n      <div class=\"card-body\">\n        <p>Water surface slope, cross section and surface velocity are combined into an estimate of discharge and hydraulic roughness. Suited to ungauged sites, to checking rating curves, and to measuring during events.<\/p>\n        <p class=\"spec\">Accuracy 15 % or better \u00b7 within 3\u20139 % of ADCP reference on the Torne River \u00b7 discharge, uncertainty and roughness per cross section<\/p>\n        <a class=\"btn\" href=\"https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/DS_River_discharge_onepager.pdf\" target=\"_blank\" rel=\"noopener\">Datasheet (PDF)<\/a>\n      <\/div>\n    <\/article>\n  <\/div>\n<\/div><\/section>\n\n<section class=\"split\"><div class=\"wrap\">\n  <div class=\"text\">\n    <h2>How we fly<\/h2>\n    <p>By default, jobs are flown within visual line of sight (VLOS) in the open category. Longer stretches are flown beyond visual line of sight (BVLOS) under EASA PDRA-G03 with a survey drone and a relay that maintains the radio link and the overview. We received our BVLOS authorisation in August 2026, and the first BVLOS surveys have been flown on the Guden\u00e5.<\/p>\n    <ul class=\"checks\">\n      <li>RTK\/PPK positioning<\/li>\n      <li>Terrain-following flight<\/li>\n      <li>Two pilots, specific category<\/li>\n      <li>Relay with camera<\/li>\n      <li>Own base stations and Starlink<\/li>\n      <li>Data in your coordinate system<\/li>\n    <\/ul>\n  <\/div>\n  <div class=\"pic\" role=\"img\" aria-label=\"Two pilots during a survey on the Isar\" style=\"background-image:url(https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/es_how_we_fly.jpg)\"><\/div>\n<\/div><\/section>\n\n<section class=\"uawos\"><div class=\"wrap\">\n  <div class=\"text\">\n    <h2>About UAWOS<\/h2>\n    <p>UAWOS, Unmanned Airborne Water Observing System, is a Horizon Europe project (2023\u20132027) developing drone-borne sensors and survey methods for rivers: water surface, bed, flow velocity and discharge at high resolution, as a supplement to gauging stations and satellite data. The project is led by DTU. Drone Systems leads the work package for survey methods and provides the four services as the commercial supplier.<\/p>\n    <p>The methods have been field-tested on R\u00f8nne \u00c5, the Guden\u00e5, Torne \u00e4lv, Isar, Lech and Orco, and the sensors are available from SPH Engineering. All protocols and datasets are public at <a href=\"https:\/\/uawos.dtu.dk\/\" target=\"_blank\" rel=\"noopener\">uawos.dtu.dk<\/a>.<\/p>\n    <p><a class=\"btn\" href=\"https:\/\/uawos.dtu.dk\/\" target=\"_blank\" rel=\"noopener\">Official UAWOS website at DTU<\/a><\/p>\n    <div class=\"eu\"><img decoding=\"async\" src=\"https:\/\/dronesystems.dk\/wp-content\/uploads\/2026\/11\/eu_funded_by.png\" alt=\"Funded by the European Union\"><small>Funded by the European Union, Horizon Europe, grant agreement no. 101081783.<\/small><\/div>\n  <\/div>\n  <div class=\"facts\">\n    <div><b>Project<\/b><span>UAWOS, Horizon Europe GA 101081783<\/span><\/div>\n    <div><b>Period<\/b><span>February 2023 \u2013 January 2027<\/span><\/div>\n    <div><b>Coordinator<\/b><span>DTU, Technical University of Denmark<\/span><\/div>\n    <div><b>Partners<\/b><span>DTU, SPH Engineering, Geolux, Drone Systems, CNR-IRPI, SMHI, TU M\u00fcnchen, Lobelia, isardSAT and Thurn Group<\/span><\/div>\n    <div><b>Role of DS<\/b><span>Leader of WP3 Airborne Surveying Services and of the commercial package for the survey services (D6.2)<\/span><\/div>\n    <div><b>Data sheets<\/b><span>Four data sheets describe the services: scope, outputs, flight parameters and productivity<\/span><\/div>\n  <\/div>\n<\/div><\/section>\n\n<section class=\"refs\"><div class=\"wrap\">\n  <h2>References<\/h2>\n  <div class=\"grid\">\n    <div class=\"ref\"><span class=\"when\">February 2026 \u00b7 Lech, Bavaria<\/span><h4>Wasserwirtschaftsamt Weilheim<\/h4><p>Water surface, echo-sounder bathymetry and Doppler velocity downstream of the weir at Epfach. First commercial UAWOS survey, delivered after quality review.<\/p><\/div>\n    <div class=\"ref\"><span class=\"when\">October 2026 \u00b7 Guden\u00e5<\/span><h4>First BVLOS survey<\/h4><p>Water surface elevations on 8 km of the Guden\u00e5 flown beyond visual line of sight under PDRA-G03 with a survey drone and a relay. A second stage with Doppler cross-sections follows in November 2026.<\/p><\/div>\n  <\/div>\n<\/div><\/section>\n\n<section class=\"cta\"><div class=\"wrap\">\n  <p class=\"lead\" style=\"color:var(--chalk)\">We are always ready for a no-obligation conversation and a quote<\/p>\n  <h2>Contact us<\/h2>\n  <p class=\"who\"><b>Sune Nielsen<\/b> \u00b7 sune@dronesystems.dk \u00b7 +45 21 85 17 44<\/p>\n  <a class=\"btn light\" href=\"https:\/\/dronesystems.dk\/en\/contact-us\/\" target=\"_blank\" rel=\"noopener\">Contact us here<\/a>\n<\/div><\/section>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Drone Systems EnvironmentalSurveys Contactless drone surveys of rivers and streams: water surface elevation, riverbed geometry, flow velocity and discharge. Developed and tested in the EU project UAWOS, now offered as a service by Drone Systems. See the four services Surveys without touching the water Traditional river surveys require people in the water, a boat or [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1120","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Environmental Surveys - Drone Systems<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dronesystems.dk\/en\/environmental-surveys\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Environmental Surveys - Drone Systems\" \/>\n<meta property=\"og:description\" content=\"Drone Systems EnvironmentalSurveys Contactless drone surveys of rivers and streams: water surface elevation, riverbed geometry, flow velocity and discharge. Developed and tested in the EU project UAWOS, now offered as a service by Drone Systems. 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