Doorvaartopening 1 (vast) Amertakbrug

Opening #764 · route 21486

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Latest Clearance

7.57 m ok

Water station: hank.bergschemaas Keizersveer
Water observed: 2026-08-28 07:00:00
Water level: 0.350 m
Calculated: 2026-08-28 07:23:13
Formula: height_closed_minus_water_level

FIS Opening Fields

Source id: fis.opening:764
Parent id: 42694 (bridge)
Reference level: n/a
Height closed: 7.920 m
Clearance height closed: 6.120 m
Height opened: n/a
Width: 30.000 m
Sill depth: n/a
Route km: 1.800 - 1.833

Parent Bridge

Name: Amertakbrug
Local id: 1789
RWS id: 42694
Source id: fis.bridge:1789
Reference level: NAP
MHW reference: RIVER
MHW offset: 1.8000
Can open: yes

Linked Water Stations

Station	Method	Distance	Confidence	Latest Observation	Level
`hank.bergschemaas` Keizersveer	nearest_spatial	5,126 m	0.49	2026-08-28 07:00:00	0.350 m

Recent Clearance History

Calculated	Water Observed	Water Level	Clearance	Status	Formula
2026-08-28 07:23:13	2026-08-28 07:00:00	0.350 m	7.570 m	ok	`height_closed_minus_water_level`
2026-08-28 07:18:17	2026-08-28 06:40:00	0.320 m	7.600 m	ok	`height_closed_minus_water_level`
2026-08-28 07:10:51	2026-08-28 06:40:00	0.320 m	7.600 m	ok	`height_closed_minus_water_level`
2026-08-28 06:10:39	2026-08-28 05:40:00	0.300 m	7.620 m	ok	`height_closed_minus_water_level`
2026-08-28 05:10:28	2026-08-28 04:50:00	0.280 m	7.640 m	ok	`height_closed_minus_water_level`
2026-08-28 04:10:15	2026-08-28 03:50:00	0.190 m	7.730 m	ok	`height_closed_minus_water_level`
2026-08-28 03:10:04	2026-08-28 02:50:00	0.090 m	7.830 m	ok	`height_closed_minus_water_level`
2026-08-28 02:09:52	2026-08-28 01:50:00	0.070 m	7.850 m	ok	`height_closed_minus_water_level`
2026-08-28 01:09:40	2026-08-28 00:40:00	0.120 m	7.800 m	ok	`height_closed_minus_water_level`
2026-08-28 00:09:28	2026-08-27 23:50:00	0.180 m	7.740 m	ok	`height_closed_minus_water_level`
2026-08-27 23:09:16	2026-08-27 22:40:00	0.250 m	7.670 m	ok	`height_closed_minus_water_level`
2026-08-27 22:09:04	2026-08-27 21:50:00	0.260 m	7.660 m	ok	`height_closed_minus_water_level`
2026-08-27 21:08:52	2026-08-27 20:50:00	0.290 m	7.630 m	ok	`height_closed_minus_water_level`
2026-08-27 20:08:39	2026-08-27 19:30:00	0.350 m	7.570 m	ok	`height_closed_minus_water_level`
2026-08-27 19:08:26	2026-08-27 18:40:00	0.320 m	7.600 m	ok	`height_closed_minus_water_level`
2026-08-27 18:08:11	2026-08-27 17:30:00	0.300 m	7.620 m	ok	`height_closed_minus_water_level`
2026-08-27 17:07:49	2026-08-27 16:40:00	0.280 m	7.640 m	ok	`height_closed_minus_water_level`
2026-08-27 16:07:30	2026-08-27 15:40:00	0.190 m	7.730 m	ok	`height_closed_minus_water_level`
2026-08-27 15:07:18	2026-08-27 14:30:00	0.080 m	7.840 m	ok	`height_closed_minus_water_level`
2026-08-27 14:07:06	2026-08-27 13:30:00	0.080 m	7.840 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": 0.4874,
        "distance_m": 5125.93,
        "reviewed_at": null
    },
    "parent_bridge": {
        "id": 1789,
        "name": "Amertakbrug",
        "rws_id": "42694",
        "can_open": true,
        "source_id": "fis.bridge:1789",
        "mhw_offset": 1.8,
        "reference_level": "NAP",
        "mhw_reference_level": null
    },
    "bridge_opening": {
        "id": 764,
        "name": "Doorvaartopening 1 (vast) Amertakbrug",
        "route_id": "21486",
        "source_id": "fis.opening:764",
        "fairway_id": "19173",
        "route_km_end": 1.833,
        "route_km_begin": 1.8,
        "height_closed_m": 7.92,
        "height_opened_m": null,
        "reference_level": null,
        "fairway_section_id": "39547",
        "clearance_height_closed_m": 6.12,
        "clearance_height_opened_m": null
    },
    "water_observation": {
        "value_m": 0.35,
        "value_cm": 35,
        "observed_at": "2026-08-28T07:00:00+00:00",
        "process_type": "meting",
        "quality_code": "00",
        "retrieved_at": "2026-08-28T07:23:04.916309+00:00",
        "station_code": "hank.bergschemaas",
        "reference_level": "NAP"
    }
}

Geometry GeoJSON

{
    "type": "Point",
    "coordinates": [
        4.830617039,
        51.695186943
    ]
}

Raw FIS JSON

{
    "id": 764,
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [
            4.83061703900006,
            51.69518694300007
        ]
    },
    "properties": {
        "id": 15476,
        "name": "Doorvaartopening 1 (vast) Amertakbrug",
        "note": null,
        "type": "VST",
        "width": 30,
        "isrsid": 9063743,
        "number": 1,
        "geotype": "opening",
        "routeid": 21486,
        "vincode": "5825",
        "objectid": 764,
        "parentid": 42694,
        "condition": "CONSTRUCTED",
        "fairwayid": 19173,
        "silldepth": null,
        "routekmend": 1.8330000000000002,
        "foreigncode": null,
        "orientation": "O",
        "widthconvoy": 30,
        "heightclosed": 7.92,
        "heightopened": null,
        "routekmbegin": 1.8,
        "geogeneration": 3310,
        "parentgeotype": "bridge",
        "fairwaysectionid": 39547,
        "passagedurationm": 0,
        "clearanceheightclosed": 6.12,
        "clearanceheightopened": null
    }
}