Doorvaartopening (beweegbaar) Westerbrug Groningen

Opening #7 · route 34883

Back

Latest Clearance

0.82 m ok

Water station: dorkwerd.reitdiep Dorkwerd Reitdiep
Water observed: 2026-08-28 04:10:00
Water level: -0.750 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:7
Parent id: 46915 (bridge)
Reference level: n/a
Height closed: 0.070 m
Clearance height closed: 1.000 m
Height opened: n/a
Width: 7.000 m
Sill depth: n/a
Route km: 9.100 - 9.080

Parent Bridge

Name: Westerbrug Groningen
Local id: 1977
RWS id: 46915
Source id: fis.bridge:1977
Reference level: KP
MHW reference: CANAL
MHW offset: n/a
Can open: yes

Linked Water Stations

Station	Method	Distance	Confidence	Latest Observation	Level
`dorkwerd.reitdiep` Dorkwerd Reitdiep	nearest_spatial	5,945 m	0.41	2026-08-28 04:10:00	-0.750 m

Recent Clearance History

Calculated	Water Observed	Water Level	Clearance	Status	Formula
2026-08-28 06:10:39	2026-08-28 04:10:00	-0.750 m	0.820 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 05:10:28	2026-08-28 04:00:00	-0.750 m	0.820 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 04:10:15	2026-08-28 02:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 03:10:04	2026-08-28 02:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 02:09:52	2026-08-28 01:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 01:09:40	2026-08-28 00:00:00	-0.780 m	0.850 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 00:09:28	2026-08-27 23:00:00	-0.780 m	0.850 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 23:09:16	2026-08-27 22:00:00	-0.780 m	0.850 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 22:09:04	2026-08-27 21:00:00	-0.770 m	0.840 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 21:08:52	2026-08-27 19:00:00	-0.770 m	0.840 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 20:08:39	2026-08-27 18:00:00	-0.780 m	0.850 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 19:08:26	2026-08-27 17:00:00	-0.770 m	0.840 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 18:08:11	2026-08-27 16:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 17:07:49	2026-08-27 15:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 16:07:30	2026-08-27 14:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 15:07:18	2026-08-27 14:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 14:07:06	2026-08-27 12:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 13:06:55	2026-08-27 12:00:00	-0.760 m	0.830 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 12:06:43	2026-08-27 10:00:00	-0.780 m	0.850 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 11:06:31	2026-08-27 10:00:00	-0.780 m	0.850 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": -0.93,
        "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": 0.18
    },
    "station_link": {
        "active": true,
        "method": "nearest_spatial",
        "confidence": 0.4055,
        "distance_m": 5945.17,
        "reviewed_at": null
    },
    "parent_bridge": {
        "id": 1977,
        "name": "Westerbrug Groningen",
        "rws_id": "46915",
        "can_open": true,
        "source_id": "fis.bridge:1977",
        "mhw_offset": null,
        "reference_level": "KP",
        "mhw_reference_level": null
    },
    "bridge_opening": {
        "id": 7,
        "name": "Doorvaartopening (beweegbaar) Westerbrug Groningen",
        "route_id": "34883",
        "source_id": "fis.opening:7",
        "fairway_id": "42639",
        "route_km_end": 9.08,
        "route_km_begin": 9.1,
        "height_closed_m": 0.07,
        "height_opened_m": null,
        "reference_level": null,
        "fairway_section_id": "16789",
        "clearance_height_closed_m": 1,
        "clearance_height_opened_m": null
    },
    "water_observation": {
        "value_m": -0.75,
        "value_cm": -75,
        "observed_at": "2026-08-28T04:10:00+00:00",
        "process_type": "meting",
        "quality_code": "00",
        "retrieved_at": "2026-08-28T06:10:30.136505+00:00",
        "station_code": "dorkwerd.reitdiep",
        "reference_level": "NAP"
    }
}

Geometry GeoJSON

{
    "type": "Point",
    "coordinates": [
        6.470714477,
        53.208332229
    ]
}

Raw FIS JSON

{
    "id": 7,
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [
            6.470714477000058,
            53.208332229000064
        ]
    },
    "properties": {
        "id": 1571,
        "name": "Doorvaartopening (beweegbaar) Westerbrug Groningen",
        "note": null,
        "type": "OPH",
        "width": 7,
        "isrsid": 13730081,
        "number": 1,
        "geotype": "opening",
        "routeid": 34883,
        "vincode": "62098",
        "objectid": 7,
        "parentid": 46915,
        "condition": "CONSTRUCTED",
        "fairwayid": 42639,
        "silldepth": null,
        "routekmend": 9.08,
        "foreigncode": null,
        "orientation": null,
        "widthconvoy": 7,
        "heightclosed": 0.07,
        "heightopened": null,
        "routekmbegin": 9.1,
        "geogeneration": 3310,
        "parentgeotype": "bridge",
        "fairwaysectionid": 16789,
        "passagedurationm": 10,
        "clearanceheightclosed": 1,
        "clearanceheightopened": null
    }
}