Doorvaartopening (vast) Blauwespoorbrug

Opening #32 · route 24996

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Latest Clearance

7.54 m ok

Water station: ijmuiden.noordersluis.oost IJmuiden, noordersluis, oost
Water observed: 2026-08-28 05:40:00
Water level: -0.440 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:32
Parent id: 4303 (bridge)
Reference level: n/a
Height closed: 7.100 m
Clearance height closed: 7.500 m
Height opened: n/a
Width: 12.250 m
Sill depth: n/a
Route km: 0.596 - 0.596

Parent Bridge

Name: Blauwespoorbrug
Local id: 123
RWS id: 4303
Source id: fis.bridge:123
Reference level: KP
MHW reference: CANAL
MHW offset: n/a
Can open: no

Linked Water Stations

Station	Method	Distance	Confidence	Latest Observation	Level
`ijmuiden.noordersluis.oost` IJmuiden, noordersluis, oost	nearest_spatial	856 m	0.91	2026-08-28 05:40:00	-0.440 m

Recent Clearance History

Calculated	Water Observed	Water Level	Clearance	Status	Formula
2026-08-28 06:10:39	2026-08-28 05:40:00	-0.440 m	7.540 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 05:10:28	2026-08-28 04:50:00	-0.430 m	7.530 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 04:10:15	2026-08-28 03:50:00	-0.430 m	7.530 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 03:10:04	2026-08-28 02:50:00	-0.440 m	7.540 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 02:09:52	2026-08-28 01:50:00	-0.450 m	7.550 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 01:09:40	2026-08-28 00:40:00	-0.430 m	7.530 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-28 00:09:28	2026-08-27 23:40:00	-0.420 m	7.520 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 23:09:16	2026-08-27 22:40:00	-0.450 m	7.550 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 22:09:04	2026-08-27 21:50:00	-0.450 m	7.550 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 21:08:52	2026-08-27 20:40:00	-0.450 m	7.550 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 20:08:39	2026-08-27 19:40:00	-0.450 m	7.550 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 19:08:26	2026-08-27 18:30:00	-0.420 m	7.520 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 18:08:11	2026-08-27 17:40:00	-0.430 m	7.530 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 17:07:49	2026-08-27 16:30:00	-0.390 m	7.490 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 16:07:30	2026-08-27 15:30:00	-0.420 m	7.520 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 15:07:18	2026-08-27 14:30:00	-0.370 m	7.470 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 14:07:06	2026-08-27 13:30:00	-0.380 m	7.480 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 13:06:55	2026-08-27 12:30:00	-0.370 m	7.470 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 12:06:43	2026-08-27 11:30:00	-0.380 m	7.480 m	ok	`kp_clearance_height_adjusted_by_current_nap_water_level`
2026-08-27 11:06:31	2026-08-27 10:30:00	-0.380 m	7.480 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": -0.4,
        "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": -0.04
    },
    "station_link": {
        "active": true,
        "method": "nearest_spatial",
        "confidence": 0.9144,
        "distance_m": 856.17,
        "reviewed_at": null
    },
    "parent_bridge": {
        "id": 123,
        "name": "Blauwespoorbrug",
        "rws_id": "4303",
        "can_open": false,
        "source_id": "fis.bridge:123",
        "mhw_offset": null,
        "reference_level": "KP",
        "mhw_reference_level": null
    },
    "bridge_opening": {
        "id": 32,
        "name": "Doorvaartopening (vast) Blauwespoorbrug",
        "route_id": "24996",
        "source_id": "fis.opening:32",
        "fairway_id": "2013",
        "route_km_end": 0.596,
        "route_km_begin": 0.596,
        "height_closed_m": 7.1,
        "height_opened_m": null,
        "reference_level": null,
        "fairway_section_id": "2510",
        "clearance_height_closed_m": 7.5,
        "clearance_height_opened_m": null
    },
    "water_observation": {
        "value_m": -0.44,
        "value_cm": -44,
        "observed_at": "2026-08-28T05:40:00+00:00",
        "process_type": "meting",
        "quality_code": "00",
        "retrieved_at": "2026-08-28T06:10:31.990274+00:00",
        "station_code": "ijmuiden.noordersluis.oost",
        "reference_level": "NAP"
    }
}

Geometry GeoJSON

{
    "type": "Point",
    "coordinates": [
        4.624983178,
        52.470969288
    ]
}

Raw FIS JSON

{
    "id": 32,
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [
            4.624983178000036,
            52.47096928800005
        ]
    },
    "properties": {
        "id": 1879,
        "name": "Doorvaartopening (vast) Blauwespoorbrug",
        "note": null,
        "type": "VST",
        "width": 12.25,
        "isrsid": 9070333,
        "number": 1,
        "geotype": "opening",
        "routeid": 24996,
        "vincode": "51011",
        "objectid": 32,
        "parentid": 4303,
        "condition": "CONSTRUCTED",
        "fairwayid": 2013,
        "silldepth": null,
        "routekmend": 0.596,
        "foreigncode": null,
        "orientation": null,
        "widthconvoy": 12.25,
        "heightclosed": 7.1,
        "heightopened": null,
        "routekmbegin": 0.596,
        "geogeneration": 3310,
        "parentgeotype": "bridge",
        "fairwaysectionid": 2510,
        "passagedurationm": 0,
        "clearanceheightclosed": 7.5,
        "clearanceheightopened": null
    }
}