Mainz gauge Rhine · km 498.3

Activity outlook

• 🚢 Shippingrestricted

  • ✓ no flood (below HSW)
  • ✗ not below mean low water (MNW)
  • ✓ level not high (below MHW)
• 🛶 Paddlingtake care

  • ✓ no flood (below HSW)
  • ✓ level not high (below MHW)
  • ✗ not below mean low water (MNW)
  • ✓ change over 24 h ≤ 20 cm
• 🎣 Fishingsuitable

  • ✓ no flood (below HSW)
  • ✓ level not high (below MHW)
  • ✓ change over 24 h ≤ 30 cm
• 🏊 Swimmingnot enough data

  • ✓ no flood (below HSW)
  • ✓ level not high (below MHW)
  • ? water temperature ≥ 15 °C
  • ? water temperature ≥ 18 °C
  • ? EU bathing site ≤ 5 km rated excellent/good
  • ✗ not a federal waterway with shipping

• Status: low · 24 h trend: -1 cm

Calculated by fixed rules from official data. For orientation only – not a safety guarantee. Always check official warnings and conditions on site. See the rules

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Paddling: access points & locks

Put-ins and slipways (≤ 5 km)

• Slipway 0.9 km
• Slipway 1.2 km
• Slipway 2.3 km
• Slipway 2.4 km
• Slipway 2.5 km

Marinas (≤ 10 km)

• Marina: Boot-Club Maarau e.V. 0.7 km
• Marina 0.9 km
• Marina: Winterhafen Mainz,Yacht Club Mainz 1.4 km
• Marina: Fa. Hener Marin 1.6 km

Locks (≤ 10 km)

• Lock 4.2 km
• Lock 4.3 km

Straight-line distance from the gauge. Entries from OpenStreetMap, not officially verified; check lock hours with the WSV.

Long-distance cycle routes nearby

• Rhein-Route D8 [Rheinland-Pfalz] 0.2 km
• EuroVelo 15 - Rheinradweg - Teilstrecke Grenze Frankreich - Bingen 0.2 km
• Saar-Mosel-Main [Mainz - Miltenberg] 0.2 km
• EuroVelo 15 - Rheinradweg - Ingelheim–Grenze Rhein-Neckar-Kreis/Landkreis Karlsruhe 0.5 km
• EV4 Germany, Koblenz - Frankfurt 0.5 km
• Saar-Mosel-Main [Koblenz - Mainz] 1.5 km

EuroVelo, German D-network and other long-distance routes passing within 3 km of the gauge (straight-line distance to the nearest route point). Check the route and its condition locally.

Fishing: Hessen

Closed season today: Bachforelle, Aal, Lachs

Fishing rules Hessen →

State derived from the gauge location; on border waters check both states. Checked 2026-10-18

Gauges up- and downstream

• ↑ upstream Nierstein-Oppenheim km 480.6 67 cm ▼ low
• ↑ upstream Bodenheim km 489 150 cm ○ no thresholds
• ↓ downstream Oestrich km 518.1 43 cm ▼ low
• ↓ downstream Bingen km 528.4 44 cm ▼ low

Rhine: gauges →

Records & flood chronicle

Highest on record (HHW)

795 cm · 28 Nov 1882

Lowest on record (NNW)

110 cm · 2 Nov 1947

Today vs. record

667 cm below HHW, 18 cm above NNW

Documented floods on this river (HANZE)

• 1 Jan 2003: river, 6 deaths, 106 m € losses (2020 prices)
• 22 Jan 1995: river, 3 deaths, 375 m € losses (2020 prices)
• 20 Dec 1993: river, 5 deaths, 891 m € losses (2020 prices)
• 26 Mar 1988: river, 6 deaths, 43 m € losses (2020 prices)

Flood chronicle Germany & Norway →

Water body status (EU Water Framework Directive)

• UNTERER OBERRHEIN DERW_DERP_2000000000_3
  Ecological potential: moderate (2018--2019) · Chemical: failing to achieve good · heavily modified/artificial
  Good status expected: after 2027

Official assessment of the water body at this gauge from the 2022 river basin management plans (WFD target: at least “good”). It rates the whole water body, not today’s water quality.

Analysis

• Rhine low water 2026: Kaub gauge below the 2018 record

Location

Sources & licences

• Water level/Discharge/Water temperature: PEGELONLINE (WSV), DL-DE Zero 2.0
• Map: © OpenStreetMap contributors, OpenFreeMap