Doorvaartopening (vast) Zandbrug

Opening #54 · route 3979

Back

Latest Clearance

pending needs_reference_level_validation

Water station: maarssen.kanaal Maarssen, kanaal
Water observed: 2026-10-12 19:50:00
Water level: -0.360 m
Calculated: 2026-10-12 20:16:51
Formula: pending_reference_level_interpretation

FIS Opening Fields

Source id: fis.opening:54
Parent id: 42587 (bridge)
Reference level: n/a
Height closed: 3.700 m
Clearance height closed: 3.200 m
Height opened: n/a
Width: 7.260 m
Sill depth: n/a
Route km: 4.100 - 4.067

Parent Bridge

Name: Zandbrug
Local id: 1784
RWS id: 42587
Source id: fis.bridge:1784
Reference level: KP
MHW reference: CANAL
MHW offset: n/a
Can open: no

Linked Water Stations

Station	Method	Distance	Confidence	Latest Observation	Level
`maarssen.kanaal` Maarssen, kanaal	nearest_spatial	6,732 m	0.33	2026-10-12 19:50:00	-0.360 m

Recent Clearance History

Calculated	Water Observed	Water Level	Clearance	Status	Formula
2026-10-12 20:16:51	2026-10-12 19:50:00	-0.360 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 19:16:40	2026-10-12 18:50:00	-0.370 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 18:16:30	2026-10-12 18:00:00	-0.360 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 17:16:19	2026-10-12 16:50:00	-0.370 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 16:16:09	2026-10-12 15:50:00	-0.350 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 15:15:59	2026-10-12 14:50:00	-0.390 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 14:15:48	2026-10-12 13:50:00	-0.340 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 13:15:39	2026-10-12 12:50:00	-0.390 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 12:15:28	2026-10-12 12:00:00	-0.400 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 11:15:17	2026-10-12 11:00:00	-0.380 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 10:15:07	2026-10-12 09:50:00	-0.380 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 09:14:57	2026-10-12 09:00:00	-0.370 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 08:14:46	2026-10-12 07:50:00	-0.390 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 07:14:35	2026-10-12 06:50:00	-0.370 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 06:14:22	2026-10-12 06:00:00	-0.380 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 05:14:11	2026-10-12 04:50:00	-0.360 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 04:13:57	2026-10-12 03:50:00	-0.330 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 03:13:47	2026-10-12 03:00:00	-0.350 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 02:13:36	2026-10-12 01:50:00	-0.330 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`
2026-10-12 01:13:25	2026-10-12 00:50:00	-0.390 m	pending	needs_reference_level_validation	`pending_reference_level_interpretation`

Calculation Basis

{
    "formula": {
        "kind": "pending_reference_level_interpretation",
        "expression": "not_computed_until_reference_level_rule_is_validated",
        "water_source": "water_level_observation.value_m",
        "height_source": "fis_bridge_opening.clearance_height_closed_m",
        "reference_level_source": "fis_bridge.reference_level",
        "reference_level_decision": "parent bridge reference level is available but not interpreted as NAP",
        "effective_reference_level": "KP"
    },
    "station_link": {
        "active": true,
        "method": "nearest_spatial",
        "confidence": 0.3268,
        "distance_m": 6732.48,
        "reviewed_at": null
    },
    "parent_bridge": {
        "id": 1784,
        "name": "Zandbrug",
        "rws_id": "42587",
        "can_open": false,
        "source_id": "fis.bridge:1784",
        "mhw_offset": null,
        "reference_level": "KP",
        "mhw_reference_level": null
    },
    "bridge_opening": {
        "id": 54,
        "name": "Doorvaartopening (vast) Zandbrug",
        "route_id": "3979",
        "source_id": "fis.opening:54",
        "fairway_id": "36083",
        "route_km_end": 4.067,
        "route_km_begin": 4.1,
        "height_closed_m": 3.7,
        "height_opened_m": null,
        "reference_level": null,
        "fairway_section_id": "30773",
        "clearance_height_closed_m": 3.2,
        "clearance_height_opened_m": null
    },
    "water_observation": {
        "value_m": -0.36,
        "value_cm": -36,
        "observed_at": "2026-10-12T19:50:00+00:00",
        "process_type": "meting",
        "quality_code": "00",
        "retrieved_at": "2026-10-12T20:16:45.274464+00:00",
        "station_code": "maarssen.kanaal",
        "reference_level": "NAP"
    }
}

Geometry GeoJSON

{
    "type": "Point",
    "coordinates": [
        5.116116554,
        52.0961795
    ]
}

Raw FIS JSON

{
    "id": 54,
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [
            5.11611655400003,
            52.09617950000006
        ]
    },
    "properties": {
        "id": 2326,
        "name": "Doorvaartopening (vast) Zandbrug",
        "note": null,
        "type": "VST",
        "width": 7.26,
        "isrsid": 9069021,
        "number": 1,
        "geotype": "opening",
        "routeid": 3979,
        "vincode": "8044",
        "objectid": 54,
        "parentid": 42587,
        "condition": "CONSTRUCTED",
        "fairwayid": 36083,
        "silldepth": null,
        "routekmend": 4.06673973,
        "foreigncode": null,
        "orientation": null,
        "widthconvoy": 7.26,
        "heightclosed": 3.7,
        "heightopened": null,
        "routekmbegin": 4.1,
        "geogeneration": 4362,
        "parentgeotype": "bridge",
        "fairwaysectionid": 30773,
        "passagedurationm": 0,
        "clearanceheightclosed": 3.2,
        "clearanceheightopened": null
    }
}