Everything about B-OF02 Overflow Test (Short Grass)
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
77;B-OF02 Overflow Test (Short Grass);Strength test;The grass cover of the levee has been mowed to a shorter length than standard to evaluate the impact of such shorter grass / vegetation on the resistance against erosion during overflow.;False;False;True;False;False;False;2020-11-05 00:00:00;2020-11-07 23:59:00;;21.0;;IV;51.34134;4.23869;11.2;"Lambert'72 coordinates: X=140935.8m; Y=225735.9m.";;Perform an overflow test on a stretch with short (mowed) vegetation.;Does the length of the vegetation play a role in erosion resistance during steady overflow?;Levee slope in visually good conditions with vegetation cut to +/- 10 cm length.;Overflow during 21:00 hours with a typical discharge of 180 L/s.m over a width of 2 m.;- 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)";;An artificial step was dug in the lower part of the levee slope during the last day of testing.;Slope surface shows signs of erosion and barren patches where vegetation is removed, but the clay cover layer is intact. No failure has occurred.;The overflow during 21 hours leads to some soil erosion and vegetation root exposure, but it does not lead to critical damage or failure. The shorter vegetation does not appear to more or faster erosion than in the reference case B-OF01.;Factual data report + Annexes: https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EvdAZOO-zylAqEWS8-SEiC4BQ5xCAuFXklsysJXnkcVYaQ?e=XDeXq8;An integration report will be added later (February 2023) as knowledge document.;under development;True;False;False;


All DATA concerning B-OF02 Overflow Test (Short Grass)
data_type;data_descripion;date_date;data_find;data_media;data_media_find
Factual data report;Factual data report describing the tests on the Belgian part of the HPP levee.;;https://stowanl-my.sharepoint.com/:w:/g/personal/llhpp_stowa_nl/EVpQIrpc_n1MhDLPmEL2Qh0BgEH8RdDV7ncL0iksYdxubw?e=fvXzeo;;
Monitoring data;"- Hydraulic timeseries - Photographs 
- ... (variable per test)";;https://stowanl-my.sharepoint.com/:f:/g/personal/llhpp_stowa_nl/EodB5tuEthlAgGshm3Z6NiMBhlSe7cuxy4Mbaa3dC2eTCQ?e=1lEtER;;


All EQUIPMENTS concerning B-OF02 Overflow Test (Short Grass)
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 B-OF02 Overflow Test (Short Grass)
No sensors added