Doorvaartopening (beweegbaar) Langmanbrug
Opening #61
ยท route 51268
Latest Clearance
2.69 m
ok
- Water station
groningenGroningen- Water observed
- 2026-08-28 05:00:00
- Water level
- -0.870 m
- Calculated
- 2026-08-28 06:10:39
- Formula
kp_clearance_height_adjusted_by_current_nap_water_level
FIS Opening Fields
- Source id
fis.opening:61- Parent id
-
55476(bridge) - Reference level
- n/a
- Height closed
- 1.820 m
- Clearance height closed
- 1.200 m
- Height opened
- n/a
- Width
- 16.000 m
- Sill depth
- n/a
- Route km
- 0.900 - 0.947
Parent Bridge
- Name
- Langmanbrug
- Local id
2350- RWS id
55476- Source id
fis.bridge:2350- Reference level
- KP
- MHW reference
- CANAL
- MHW offset
- n/a
- Can open
- yes
Linked Water Stations
| Station | Method | Distance | Confidence | Latest Observation | Level |
|---|---|---|---|---|---|
groningen
Groningen
|
nearest_spatial | 1,673 m | 0.83 | 2026-08-28 05:00:00 | -0.870 m |
Recent Clearance History
| Calculated | Water Observed | Water Level | Clearance | Status | Formula |
|---|---|---|---|---|---|
| 2026-08-28 06:10:39 | 2026-08-28 05:00:00 | -0.870 m | 2.690 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 05:10:28 | 2026-08-28 04:10:00 | -0.880 m | 2.700 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 04:10:15 | 2026-08-28 03:00:00 | -0.880 m | 2.700 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 03:10:04 | 2026-08-28 02:00:00 | -0.890 m | 2.710 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 02:09:52 | 2026-08-28 01:00:00 | -0.880 m | 2.700 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 01:09:40 | 2026-08-28 00:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-28 00:09:28 | 2026-08-27 23:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 23:09:16 | 2026-08-27 22:00:00 | -0.880 m | 2.700 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 22:09:04 | 2026-08-27 21:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 21:08:52 | 2026-08-27 20:10:00 | -0.880 m | 2.700 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 20:08:39 | 2026-08-27 19:00:00 | -0.910 m | 2.730 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 19:08:26 | 2026-08-27 18:10:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 18:08:11 | 2026-08-27 17:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 17:07:49 | 2026-08-27 16:10:00 | -0.890 m | 2.710 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 16:07:30 | 2026-08-27 15:00:00 | -0.890 m | 2.710 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 15:07:18 | 2026-08-27 14:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 14:07:06 | 2026-08-27 13:00:00 | -0.890 m | 2.710 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 13:06:55 | 2026-08-27 12:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 12:06:43 | 2026-08-27 11:00:00 | -0.900 m | 2.720 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
| 2026-08-27 11:06:31 | 2026-08-27 10:00:00 | -0.890 m | 2.710 m | ok | kp_clearance_height_adjusted_by_current_nap_water_level |
Calculation Basis
{
"formula": {
"kind": "kp_clearance_height_adjusted_by_current_nap_water_level",
"expression": "clearance_height_closed_m + ((height_closed_m - clearance_height_closed_m) - water_level_m)",
"water_source": "water_level_observation.value_m",
"height_source": "fis_bridge_opening.clearance_height_closed_m adjusted by inferred KP level",
"kp_reference_level_nap": 0.62,
"reference_level_source": "fis_bridge.reference_level",
"reference_level_decision": "KP is treated as fixed kanaalpeil; FIS clearance height is adjusted by the current NAP water level delta from inferred KP",
"effective_reference_level": "KP",
"current_water_delta_from_kp_m": -1.49
},
"station_link": {
"active": true,
"method": "nearest_spatial",
"confidence": 0.8327,
"distance_m": 1672.69,
"reviewed_at": null
},
"parent_bridge": {
"id": 2350,
"name": "Langmanbrug",
"rws_id": "55476",
"can_open": true,
"source_id": "fis.bridge:2350",
"mhw_offset": null,
"reference_level": "KP",
"mhw_reference_level": null
},
"bridge_opening": {
"id": 61,
"name": "Doorvaartopening (beweegbaar) Langmanbrug",
"route_id": "51268",
"source_id": "fis.opening:61",
"fairway_id": "31184",
"route_km_end": 0.947,
"route_km_begin": 0.9,
"height_closed_m": 1.82,
"height_opened_m": null,
"reference_level": null,
"fairway_section_id": "38322",
"clearance_height_closed_m": 1.2,
"clearance_height_opened_m": null
},
"water_observation": {
"value_m": -0.87,
"value_cm": -87,
"observed_at": "2026-08-28T05:00:00+00:00",
"process_type": "meting",
"quality_code": "00",
"retrieved_at": "2026-08-28T06:10:30.882836+00:00",
"station_code": "groningen",
"reference_level": "NAP"
}
}
Geometry GeoJSON
{
"type": "Point",
"coordinates": [
6.599746943,
53.213850123
]
}
Raw FIS JSON
{
"id": 61,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [
6.599746943000071,
53.21385012300004
]
},
"properties": {
"id": 2440,
"name": "Doorvaartopening (beweegbaar) Langmanbrug",
"note": null,
"type": "OPH",
"width": 16,
"isrsid": 9074373,
"number": 1,
"geotype": "opening",
"routeid": 51268,
"vincode": "59237",
"objectid": 61,
"parentid": 55476,
"condition": "CONSTRUCTED",
"fairwayid": 31184,
"silldepth": null,
"routekmend": 0.9470000000000001,
"foreigncode": null,
"orientation": null,
"widthconvoy": 16,
"heightclosed": 1.82,
"heightopened": null,
"routekmbegin": 0.9,
"geogeneration": 3310,
"parentgeotype": "bridge",
"fairwaysectionid": 38322,
"passagedurationm": 10,
"clearanceheightclosed": 1.2,
"clearanceheightopened": null
}
}