Doorvaartopening 1 (vast) Alblasserdamsebrug

Opening #2475 · route 46733

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Latest Clearance

12.26 m ok

Water station: dordrecht.oudemaas.benedenmerwede Dordrecht Oude Maas, Beneden Merwede
Water observed: 2026-08-28 07:00:00
Water level: 0.290 m
Calculated: 2026-08-28 07:23:13
Formula: height_closed_minus_water_level

FIS Opening Fields

Source id: fis.opening:2475
Parent id: 43523 (bridge)
Reference level: n/a
Height closed: 12.550 m
Clearance height closed: 10.480 m
Height opened: n/a
Width: 180.000 m
Sill depth: n/a
Route km: 122.002 - 122.002

Parent Bridge

Name: Alblasserdamsebrug (Brug over de Noord)
Local id: 1834
RWS id: 43523
Source id: fis.bridge:1834
Reference level: NAP
MHW reference: RIVER
MHW offset: 2.0700
Can open: yes

Linked Water Stations

Station	Method	Distance	Confidence	Latest Observation	Level
`dordrecht.oudemaas.benedenmerwede` Dordrecht Oude Maas, Beneden Merwede	nearest_spatial	4,199 m	0.58	2026-08-28 07:00:00	0.290 m

Recent Clearance History

Calculated	Water Observed	Water Level	Clearance	Status	Formula
2026-08-28 07:23:13	2026-08-28 07:00:00	0.290 m	12.260 m	ok	`height_closed_minus_water_level`
2026-08-28 07:18:17	2026-08-28 06:40:00	0.360 m	12.190 m	ok	`height_closed_minus_water_level`
2026-08-28 07:10:51	2026-08-28 06:40:00	0.360 m	12.190 m	ok	`height_closed_minus_water_level`
2026-08-28 06:10:39	2026-08-28 05:40:00	0.560 m	11.990 m	ok	`height_closed_minus_water_level`
2026-08-28 05:10:28	2026-08-28 04:50:00	0.680 m	11.870 m	ok	`height_closed_minus_water_level`
2026-08-28 04:10:15	2026-08-28 03:40:00	0.700 m	11.850 m	ok	`height_closed_minus_water_level`
2026-08-28 03:10:04	2026-08-28 02:50:00	0.690 m	11.860 m	ok	`height_closed_minus_water_level`
2026-08-28 02:09:52	2026-08-28 01:50:00	0.280 m	12.270 m	ok	`height_closed_minus_water_level`
2026-08-28 01:09:40	2026-08-28 00:40:00	-0.090 m	12.640 m	ok	`height_closed_minus_water_level`
2026-08-28 00:09:28	2026-08-27 23:50:00	-0.090 m	12.640 m	ok	`height_closed_minus_water_level`
2026-08-27 23:09:16	2026-08-27 22:40:00	-0.030 m	12.580 m	ok	`height_closed_minus_water_level`
2026-08-27 22:09:04	2026-08-27 21:50:00	-0.020 m	12.570 m	ok	`height_closed_minus_water_level`
2026-08-27 21:08:52	2026-08-27 20:40:00	-0.040 m	12.590 m	ok	`height_closed_minus_water_level`
2026-08-27 20:08:39	2026-08-27 19:40:00	0.030 m	12.520 m	ok	`height_closed_minus_water_level`
2026-08-27 19:08:26	2026-08-27 18:40:00	0.140 m	12.410 m	ok	`height_closed_minus_water_level`
2026-08-27 18:08:11	2026-08-27 17:40:00	0.390 m	12.160 m	ok	`height_closed_minus_water_level`
2026-08-27 17:07:49	2026-08-27 16:30:00	0.600 m	11.950 m	ok	`height_closed_minus_water_level`
2026-08-27 16:07:30	2026-08-27 15:40:00	0.630 m	11.920 m	ok	`height_closed_minus_water_level`
2026-08-27 15:07:18	2026-08-27 14:30:00	0.590 m	11.960 m	ok	`height_closed_minus_water_level`
2026-08-27 14:07:06	2026-08-27 13:30:00	0.170 m	12.380 m	ok	`height_closed_minus_water_level`

Calculation Basis

{
    "formula": {
        "kind": "height_closed_minus_water_level",
        "expression": "height_closed_m - water_level_m",
        "water_source": "water_level_observation.value_m",
        "height_source": "fis_bridge_opening.height_closed_m",
        "reference_level_source": "fis_bridge.reference_level",
        "reference_level_decision": "NAP reference level detected on opening or parent bridge",
        "effective_reference_level": "NAP"
    },
    "station_link": {
        "active": true,
        "method": "nearest_spatial",
        "confidence": 0.5801,
        "distance_m": 4198.83,
        "reviewed_at": null
    },
    "parent_bridge": {
        "id": 1834,
        "name": "Alblasserdamsebrug (Brug over de Noord)",
        "rws_id": "43523",
        "can_open": true,
        "source_id": "fis.bridge:1834",
        "mhw_offset": 2.07,
        "reference_level": "NAP",
        "mhw_reference_level": null
    },
    "bridge_opening": {
        "id": 2475,
        "name": "Doorvaartopening 1 (vast) Alblasserdamsebrug",
        "route_id": "46733",
        "source_id": "fis.opening:2475",
        "fairway_id": "5135",
        "route_km_end": 122.002,
        "route_km_begin": 122.002,
        "height_closed_m": 12.55,
        "height_opened_m": null,
        "reference_level": null,
        "fairway_section_id": "57957",
        "clearance_height_closed_m": 10.48,
        "clearance_height_opened_m": null
    },
    "water_observation": {
        "value_m": 0.29,
        "value_cm": 29,
        "observed_at": "2026-08-28T07:00:00+00:00",
        "process_type": "meting",
        "quality_code": "00",
        "retrieved_at": "2026-08-28T07:23:04.026664+00:00",
        "station_code": "dordrecht.oudemaas.benedenmerwede",
        "reference_level": "NAP"
    }
}

Geometry GeoJSON

{
    "type": "Point",
    "coordinates": [
        4.653279595,
        51.856105605
    ]
}

Raw FIS JSON

{
    "id": 2475,
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [
            4.653279595000072,
            51.85610560500004
        ]
    },
    "properties": {
        "id": 47391,
        "name": "Doorvaartopening 1 (vast) Alblasserdamsebrug",
        "note": null,
        "type": "VST",
        "width": 180,
        "isrsid": 9061048,
        "number": 1,
        "geotype": "opening",
        "routeid": 46733,
        "vincode": "5774",
        "objectid": 2475,
        "parentid": 43523,
        "condition": "CONSTRUCTED",
        "fairwayid": 5135,
        "silldepth": null,
        "routekmend": 122.00210089,
        "foreigncode": null,
        "orientation": "ZW",
        "widthconvoy": 180,
        "heightclosed": 12.55,
        "heightopened": null,
        "routekmbegin": 122.002,
        "geogeneration": 3620,
        "parentgeotype": "bridge",
        "fairwaysectionid": 57957,
        "passagedurationm": 0,
        "clearanceheightclosed": 10.48,
        "clearanceheightopened": null
    }
}