Everything about N-OF05 Overflow Test (Burrow)
id;activity_name;activity_type;activity_descriptor;breaching;animal;erosion;temporary;levee_survey;prolonged;start_date;end_date;date_length_day;date_length_hour;date_other;levee_stretch;location_x;location_y;location_z;location_descriptor;location_other;objectif_important;objectif_knowledge;pre_condition;act_des;monitoring_process;monitoring_reasoning;limits;during_activity;post_activity;activity_result;results_conc;knowledge_desc;ref_links;wrk_1;wrk_2;wrk_3;key_info
67;N-OF05 Overflow Test (Burrow);Strength test;;False;True;True;False;False;False;2020-11-23 08:00:00;2020-11-23 17:00:00;1;;Total overflow time: 1 hour 19 minutes.;VI;51.34847;4.22893;12.0;Landward slope of levee.;"Lambert '72 coordinates
X=140257.8
Y=226535.6";Perform an overflow test on a location with a large burrow on the levee slope.;How will the presence of a large burrow impact the resistantance and stability of the levee in an overflow situation?;Large animal burrow midway of the test section. Otherwise, the levee surface state is;Several short runs have been performed out of caution for fast, serious damage. Due to the presence of wire fence in the soil, indicating a prior burrow repair, the soil was somewhat stabilized, but gave way ultimately after little more than 1 hour with a large damage in consequence.;- Overhead cameras (4) - Acoustic water height sensors - Electromagnetic current velocity sensors - Discharge sensor (EM or acoustic);"Description of the hydraulic conditions of the overflow. The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)";;During  the  first  block  of  the  experiment,  the sand  mound  around  the  rabbit  burrow  was  washed  away,  coloring  the  overflowing  water, muddy brown. During  the  subsequent  blocks,  the  current  started  to  divert  around  the  burrow  (due  to topographic differences). The current stayed like this for several minutes, whilst the wire fence was slowly being undercut. Finally, after 1 hour and 13 minutes, the test was ended because the cliff that had developed suddenly destabilized and gave rise to a large slope failure.;During the minutes that followed the end of the experiment, it was observed how the head scarp migrated another 2 meters upwards;Large burrows pose a threat to the levee stability and integrity during overflow.;Factual data report: https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EX5yYnuJ-EBBjoKAxAwg8LkBef8ra9V_-GHjzbkz0Was8g?e=pyaUSq Annexes: https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EWIzoxIhxopCryc6744YgHYBBWr_0fhoGpJ_1pSy0_tM2w?e=pY8Hc6;An integration report will be added later (February 2023) as knowledge document.;under development;True;False;False;


All DATA concerning N-OF05 Overflow Test (Burrow)
data_type;data_descripion;date_date;data_find;data_media;data_media_find
Timeseries;Timeseries of Discharge, Water Height and Current Velocity in different positions on the levee slope.;;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EqQnUHckbSpPtCc3SXmmjCsBw1cRpUTWIgYD6fKFnCIYyQ?e=HC4crq;;
Photo imagery;2 portals with in total 4 cameras are used to take surface photographs of the levee slope at different times during and in between overflow activity. The surface images in between overflow blocks show damage and vegetation evolution.;;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EmOSFRrdtphJot0zVUxOJJ8BvU0YCFG0qOtJHDv5Cqsldg?e=Acildh;;


All EQUIPMENTS concerning N-OF05 Overflow Test (Burrow)
equip_type;equip_usage
Overflow generator.;"The setup is described in Vercruysse et al. (2022): ""Design and application of an overflow generator."" (Ref WL2022R20_047_1)"


All SENSORS concerning N-OF05 Overflow Test (Burrow)
No sensors added