River system of the Ems
The catchment area of the Ems is essentially flat and especially not a basin. At several points, parallel to an inflow of the Ems, there is no separating bump in the river, which drains in the direction of the Weser or the Rhine ( delta ). The highest peaks are in the northwestern Teutoburg Forest between the Ems in the west and its tributary Hase in the east. The Hase is the only tributary of the Ems over 100 km in length. A large part of the Ems tributaries does not have a source in the classical sense, but arises from drainage ditches. There are many bodies of water with long, narrow catchment areas that only merge in a fan-shaped manner to larger ones relatively shortly before the confluence with the Ems.
On both sides of by the Dollard greatly expanded estuary waters networks were expanded to complicated drainage systems. The layout of the catchment area was also heavily changed by human hands: in the west, the rivers Hunze and Drentsche Aa , which originally ran through the Reitdiep into the Lauwers , are drained , as is the Noord-Willemskanaal to the Unterems. In the east, the water from the Vehnemoor , located between the indirect tributaries of the Ems Lahe and Vehne , flows through the coastal canal into the Hunte and thus into the Weser .
On the Ems itself and on the tributaries of the Leda , the tides can still penetrate far inland. On the other hand, on the broad part of the estuary and the neighboring north coasts, the sluices were moved as far forward as possible.
- The map of the entire Ems area is after the table. -
The Ems, its most important tributaries and their most important tributaries from 25 km in length or 100 km² catchment area | |||||||||||||||||||||
Representation:
|
|||||||||||||||||||||
Inflow in the direction of flow seen from, ⇒ A BZWEIG TO |
Surname | GKZ | Estuary km from |
(Position of) the mouth, possibly [km] |
Length [km] |
Catchment area [km²] |
medium exhaust flow [m³ / s] (% RTB) |
annotation | |||||||||||||
Ems | 3 | Line Eemshaven - Pilsum | 362.3 | 13,983.6 | 125 | ||||||||||||||||
Left | Zeehaven Canal | (DE: 3992) | I: 15 | 5.9 | |||||||||||||||||
right | Eems Canal | II: 4.9 | Sea lock, 0.5 km outer depth | 26.46 / 27.95 | together with Winschoter Diep drainage to bd. end up | ||||||||||||||||
⇒ SOUTHERN | Slochterdiep | S: 22.53 | Ruischerbrug | 6.55 / 11.15 | Water if needed in Slochterdiep | ||||||||||||||||
⇔ SOUTH | Winschoterdiep | S: 26.46 | Groningen harbor | 36.1 | together with Eemskanaal drainage to bd. end up | ||||||||||||||||
south | Drentsche Diep | G: 6.05 | Waterhuizen | 5.54 / 47.2 | |||||||||||||||||
↑ Zuidlaardermeer | G: 11.59 | 4th | |||||||||||||||||||
↑ Hunze | G: 15.6 | Zuidlaren | 25.5 / 47.2 | ||||||||||||||||||
Left | Voorste Diep | G: 40.16 | Gasselternijveen | 3.34 | stronger source stream | ||||||||||||||||
↑ Groote Diep ← Eighth Diep | 12.2 | ||||||||||||||||||||
south | Kieldiep ← Grevelings Canal | G: 12.8 | Hoogezand | 16 | |||||||||||||||||
↑ Stadskanaal | G: 28.8 | south of Veendam | 12.4 | ||||||||||||||||||
⇒ RE. | Pekeler Hoofddiep | G: 34.3 | V: 5.5 | 13.9 / 22.9 | |||||||||||||||||
↑ Verbindingskanaal + west. Piece Eemskanaal | S: 26.46 | Groningen harbor | 2.9 | ||||||||||||||||||
right | Noord-Willemskanaal | G: 2.9 | SW d. Groningen old town | 24 | |||||||||||||||||
right | Drentsche Aa ← Oudemolensche Diep ← Taarlosche Diep | G: 26.1 | V: 2.2 | 29.2 | |||||||||||||||||
right | Havenkanaal Assen | G: 23.9 | E: 2.8 | 5.7 | |||||||||||||||||
right | Deurzerdiep ← Amerdiep | G: 11.2 | IV: 8.3 | 17.0 | |||||||||||||||||
⇒ RE. | Taarlosche Diep → Oudemolensche Diep → Drentsche Aa | G: 26.1 | V: 2.09 | 29.2 | |||||||||||||||||
right | Afwateringskanaal van Duurswold | II: 5.5 | Delfzijl harbor | 19.7 / 25.5 | |||||||||||||||||
Shield sea | S: 10.5 | (3.15) | |||||||||||||||||||
Afwateringskanaal van Duurswold | S: 13.65 | (5.3) | |||||||||||||||||||
bds. | Slochterdiep (west + east) | S: 18.94 | Woudbloem - Schaaphoek | 6.55 + 4.6 | |||||||||||||||||
right | Damster Diep | (DE: 3992) | II: 5.9 | Delfzijl harbor | 28.2 | ||||||||||||||||
right | Knockest low | 398 | I: 15.8 | Siel and pumping station Knock | 23 / 31.45 | 450.4 or 350 | 50% Siel 50% PW |
Common catchment area of Siel and Schöpfwerk Knock and those in Greetsiel → Leysiel | |||||||||||||
⇔ N ORD | New Greetsieler Sieltief | 3982 | S: 15.07 | north of Loppersum | 16.35 | 130 | 10% Siel 90% PW |
||||||||||||||
⇔ N ORD | Old Greetsieler Sieltief | 3982, 3984 | S: 19.92 | Back | 16.79 | ||||||||||||||||
east | Abelitz | 3982 (1-7) | S: 22.76 | III: 2.84 | 14.38 / 19.51 | 106.5 | O-S: 37.14 | ||||||||||||||
Left | Adewegschloot | 39821112 | S: 33.69 | O: 0.59 | 5.74 | O-S: 39.43 | |||||||||||||||
↑ right (+ left) |
Marchers low | 398 | S: 22.96 | western Great Sea | 0.9 | Connections to the Great Sea can be blocked | |||||||||||||||
↑ right | Wiegoldsburer vineyard | 388 | S: 23.86 | NW. Big sea | 7.6 | O-S: 31.36 | |||||||||||||||
Left |
Termunterzijldiep ← Nieuwe Siepsloot ← Nieuwe Sloot ← Eerste Veensloot |
(DE: 3976) | I: 17 | Termunterzijl | 19.9 / 26.22 | ||||||||||||||||
Left | Dollard / Dollard: Groote Diep ← Buiten Aa | 3974 | I: 17 | Dollartmund | 17.3 | ||||||||||||||||
↑ Westerwoldsche Aa | 3974 | II: 17.3 | Statenzijl | 26.25 / 57.23 | |||||||||||||||||
right | Verenigd of (oder) BL Tijdenskanaal | S: 7.41 | 15.44 | ||||||||||||||||||
Left | Mussel Aa Kanaal | S: 22.85 | IV: 15.44 | 17.57 | |||||||||||||||||
Left | Pagediep | S: 27.56 | V: 4.71 | 7.86 | Pagediep VI: 1–2.53 also Mussel Aa | ||||||||||||||||
↑ right | Ruiten Aa Kanaal | S: 22.85 | IV: 15.44 | 39.92 | |||||||||||||||||
⇒ LI. | Ruiten Aa | O: 0.74 | Ter Apel | 30.98 | |||||||||||||||||
Left | Pekel Aa ← Pekeler Hoofddiep | S: 11.8 | "Winschoterzijl" | 8.95 / 22.86 | |||||||||||||||||
Left | Winschoterdiep | S: 15.8 | IV: 4 | 36.11 | together with Eemskanaal drainage to bd. end up | ||||||||||||||||
south | AG Wildervanckkanaal | S: 29.54 | V: 13.7 | 31.06 | O-S: 60.60 | ||||||||||||||||
cross | Pekeler Hoofddiep | VI: 16 | Oude Pekela | 13.9 | |||||||||||||||||
Left | Mussel Canal | S: 53.36 | VI: 30.46 | 10.2 | |||||||||||||||||
⇒ LI. | Stadskanaal | S: 55.14 | VII: 1.78 | 12.38 | |||||||||||||||||
⇒ RE. | AG Wildervanckk. | VII: 8.68 | Musselkanaal (village) | 31.06 | |||||||||||||||||
↑ Ter Apelkanaal | VII: 10.2 | Jipsingboermussel | 9.02 | ||||||||||||||||||
⇒ RE. | Ruiten Aa Kanaal | VII: 17.14 | Ter Apel | 39.92 | |||||||||||||||||
⇒ RE. | Pagediep | S: 50.74 | O: 9.86 | (5.33) / 7.86 | 1.53 km merged | ||||||||||||||||
⇒ RE. | Mussel Aa | S: 58.26 | O: 2.34 | (11.6) / 17.66 | |||||||||||||||||
⇒ RE. | Mussel Aa Kanaal | S: 59.06 | O: 1.54 | 17.57 | |||||||||||||||||
cross | AG Wildervanckkanaal | S: 33.05 | IV: 21.25 | 31.06 | |||||||||||||||||
Left | Mussel Aa | S: 26.25 | 4.54 / 17.66 | 1.53 km merged | |||||||||||||||||
cross | Pagediep | S: 37.59 | V: 4.54-6.07 | 7.86 | |||||||||||||||||
↑ Ruiten Aa | S: 26.25 | 30.98 | |||||||||||||||||||
right | Emder harbor | 3972 | I: 26.6 | Sea locks | 2.68 | 138.2 | Main drainage route no longer corresponds to GKZ | ||||||||||||||
↑ Ems-Jade Canal from the Wiesens lock | 3968 | S: 2.68 | Falderndelft , Emden | 32.1 / 7.23 | 128.4 | ||||||||||||||||
cross | Emder Stadtgraben - Fehntjer Tief (W) | 3946, 398 ... | S: 4.68 | Boiler lock | 10.14 | Crossing only with interruption of the EJK (chamber empty) | |||||||||||||||
⇒ ( LI ) | Borßumer Canal (Emder Receiving Canal) | 396 | S: 3.37 | Culvert below E.-Jade-K. | only rarely used reserve drainage d. EJK | ||||||||||||||||
right | Ring Canal Südbrookmerland ← Kuhlenplatzgraben | 3966 | S: 20.9 | 14.5 | |||||||||||||||||
Left |
Abelitz-Moordorf Canal (eastern part) ← Abelitzschloot |
39662 | S: 31.1 | 12.93 | |||||||||||||||||
Left | Meerhusener Graben Y | 3966218 | O: 1.5 | 4.73 | |||||||||||||||||
right | Borßumer Canal (Emder Receiving Canal) | 396 | I: 29.8 | only reserve drainage path, s. O. | |||||||||||||||||
Left | Wymeerer Sieltief | 3956 | I: 31.9 | Pogum | 23.81 / 25.74 | 58.3 | |||||||||||||||
Left | Hessentief | 395618 | S: 19.21 | south of Nieuweschans | 6.43 | O-S: 25.74 | |||||||||||||||
right | Oldersumer Sieltief | 394 | I: 37.5 | Oldersum | 4.4 / ... | 235.1 | |||||||||||||||
right | Fehntjer Tief (West) | 3946 | S: 4.4 | 10.14 | 49.9 | ||||||||||||||||
↑ Fehntjer Tief (east) | 394 | 22.1 / 23.9 | 106.3 | ||||||||||||||||||
right | ↑ Crooked low | 3944 | S: 13.21 | 16.29 | 37.6 | O-S: 29.40 | |||||||||||||||
Left | Fehntjer Tief (southern arm) ← Timmeler Meer ← Neuefehn Canal | 3942 | S: 17.86 | 6.71 | 19.4 | ||||||||||||||||
↑ Fehntjer Tief (Northern Arm) ← Flumm ← Grenzgraben | 3941 | S: 17.86 | 8.65 / 10.44 | 11.1 | O-S: 28.32 | ||||||||||||||||
right | Sauteler Canal ← Alte Flumm | 392 | I: 43.9 | Sautelersiel pumping station | 28.64 | 188.3 | |||||||||||||||
right | Leda | 38 | I: 53.6 | Empty place | 75 | 2096 | |||||||||||||||
right | Jümme | 388 | II: 8.9 | 18.33 / 94.6 | 1350.6 | ||||||||||||||||
Left |
Fehn main canal ↑ Burlage-Langholter Tief |
386 | II: 17.24 | at Potshausen | 6.79 / 37.63 | 183.5 | |||||||||||||||
Breakwater | 386 (1) | III: 24.48 | 13.16 | 44.7 | |||||||||||||||||
right | North Georgsfehn Canal | 3886 | II: 19.3 | III: 10.4 | 27.7 / 31.8 | 164.05 | O: 27.7 watershed e.g. EJK | ||||||||||||||
⇒ LI. | Dreyschloot | 385129, ... | II: 27.2 | III: 18.33 | 1.14 | ||||||||||||||||
right | Aper Tief ← Große Süderbäke | 3884 | II: 24.7 | III: 15.8 | 31.4 | 276.3 | L = 31–32 km (trench system) | ||||||||||||||
↑ Barßeler Tief | 388311-331 | II: 27.2 | III: 18.33 | 4.66 | |||||||||||||||||
right | ↑ Nordloher Tief | 3882 | II: 31.86 | III: 22.99 | 3.2 / 46.07 | 327.4 | |||||||||||||||
↑ Godesholter Low ← Aue | 3882 | III: 26.2 | Barßel | 32.07 / 46.07 / 47.8 | 316.6 | ||||||||||||||||
Left | Vehne | 38822 | III: 44.75 | IV: 21.76, Edewecht | 38.5 | 105.1 | |||||||||||||||
↑ Zwischenahner Meer | various | IV: 32.04 | |||||||||||||||||||
Left | Halfsteder Bäke | 388212 | 12 | 32.56 | |||||||||||||||||
↑ Auebach | 3882 (11) | II: 35.5 | (Hamlet) Aue | 10.62 | 15.89 | ||||||||||||||||
↑ Soeste | 388 (1) | II: 31.86 | Barßel | 71.65 | 457.5 | ||||||||||||||||
right | Lahe ← Great floodplain | 388818 | II: 40.5 | 34.36 | 183.9 | ||||||||||||||||
⇒ RE. | Lahe arrester | 4967232 | IV: 10.16 | Vehnemoor West | 5.54 | → Coastal Canal → Hunte → Weser | |||||||||||||||
right | Dreyschloot | 385129, ... | II: 24.12 | 1.14 | |||||||||||||||||
↑ Said Ems | 38 | 24 | |||||||||||||||||||
right | Marka | 382 | II: 48.3 | 28.7 | 141.6 | ||||||||||||||||
↑ Oh | 38 | 20.5 | 181.5 | ||||||||||||||||||
right | Nordradde with the Emsaltarm Roheide | 372 | I: 132 | Meppen | 32.5 | 205/200 | 1.1 (64%) | ||||||||||||||
right | Hare | 36 | I: 134.5 | Meppen | 169.6 | 3115.6 | 21.5 (73%) | ||||||||||||||
right | Mittelradde | 368 | II: 18.0 | 38.5 | 207.8 | 0.9 (59%) | |||||||||||||||
right | Südradde | 3672 | II: 41.6 | 31.5 | 139.05 | ||||||||||||||||
Left | Hahnenmoorkanal ← Little Rabbit | 366 | II: 47.5 | 3.5 ob. Herzlake | 24.34 | 297.85 | |||||||||||||||
↑ Big rabbit | 36 | ||||||||||||||||||||
right | Camp bunny | 364 | II: 70.1 | 2 west of Essen (Old) | 15.45 / 26.84 | 555.75 | |||||||||||||||
right | Fladder Canal ← Vechta Moorbach | 3644 | II: 78.6 | III: 8.5 | 36.85 | 238.8 | Q-III: 45.15 | ||||||||||||||
↑ Dinklager Mühlenbach | 364 | II: 85.5 | III: 15.4 | 11.44 | 136.3 | Q-III: 26.84 | |||||||||||||||
right |
Trenkkampsbach ↑ Mühlener Mühlebach |
36414 | III: 19.0 | 13.47 | 46.8 | Q-III: 32.47 | |||||||||||||||
Left | Harpendorfer Mühlenbach | 364144 | III: 25.0 | 9.85 | 13.68 | Q-III: 34.85 | |||||||||||||||
↑ Essen Canal | 36 | II: 70.1 | |||||||||||||||||||
right | ↑ Bünne - Wehdeler Grenzkanal | 363949 | II: 75.6 | 11.0 | |||||||||||||||||
↑ Rabbit | 36 | ||||||||||||||||||||
⇒ LI. | Little Hare → Hahnenmoorkanal | 366 | II: 80 | ob. Quakenbrück | 24.3 | 297.85 | |||||||||||||||
Left | Alfsee outlet | 36352 | II: 99.6 | 3.12 / 11.4 | |||||||||||||||||
↑ Alfsee | 36352 | 2.78 | with Vorsee 3.38 km long | ||||||||||||||||||
⇒ LI. | ↑ Feeder | 36352 | II: 113 | unt. Bramsche | 4.5 / 5.1 | ||||||||||||||||
Left | Goodness | 362 | II: 127.9 | Lotte - Halen | 34.6 | 231.8 | 2.5 | ||||||||||||||
⇒ RE. | Else (→ Werre → Weser ) | 466 | II: 158.6 | Molded | 35.2 | 415.5 | 63.7 (65%) | ||||||||||||||
right | Big Aa | 34 | I: 174.8 | 6 km above Lingen | 24.2 / 34.9 / 55.3-56.3 | 822.3 | |||||||||||||||
Left | Speller Aa | 344 | II: 7.25 | 19.7 / 48-49 | 370.1 | Giegel Aa shorter way | |||||||||||||||
Left |
Dreierwalder Aa ← Hörsteler Aa ← Ibbenbürener Aa ← Ledder Mühlenbach |
3448 | II: 26.95 | III: 19.7; Spelle | 55.7 | 137.7 | |||||||||||||||
↑ Hopstener Aa | 344 | II: 26.95 | III: 19.7 | 15.5 / 56.3 | 191.36 | ||||||||||||||||
⇒ RE. | Giegel Aa | 3438 | II: 29.15 | III: 21.9; Hops | 11.3 | 2/3–3 / 4 of the inflow to the bifurcation | |||||||||||||||
↑ Recker Aa ← Mettinger Aa ← Stollenbach | 344 | 21.2 / 48-49 | Origin II: 55.3-56.3 | ||||||||||||||||||
Left | Giegel Aa | 3438 | II: 16.27 | 11.3 | Bif – II: 27.57 (1.58 shorter than by Hopster Aa) | ||||||||||||||||
Left | Schaler Aa | 342 | II: 24.2 | Freren , | 31.0 | 136.9 | O-II: 55.2 | ||||||||||||||
↑ Deeper Aa | 34 | 10.7 / 34.9 | 152.2 | O-II: 34.9 | |||||||||||||||||
Left | Fürstenauer Mühlenbach | 3412 | II: 27.8 | 13 | 25.2 | O-II: 40.8 | |||||||||||||||
right | Hemelter Bach ← Bevergerner Aa ← Floethe | 3389 | I: 213.3 | Rheine | 33.9 | 95.0 | |||||||||||||||
Left | Emsdetter Mühlenbach ← New Ditch ← Brüggemannsbach ← Wipperbach | 336 | I: 230.05 | Emsdetten | 19.5 | 107.9 | |||||||||||||||
right | Glane ← Ladberger Mühlenbach ← Lienen Mühlenbach ← Brockbieke | 334 | I: 240.5 | 35.1 / 55.4 | 354.0 | ||||||||||||||||
Left | Eltingmühlenbach ← Glaner Bach ← Oedingberger Bach | 3346 | II: 3.5 | 51.3 / 51.9 | 166.1 | Q. in Bad Iburg | |||||||||||||||
right | Sunderbach | 3346112 | III: 50.5 | Q: 0.8 | 1.85 | ||||||||||||||||
Left | Munster Aa | 332 | I: 251.8 | 43.3 | |||||||||||||||||
Left | Werse | 32 | I: 262.2 | 66.6 | 762.3 | 3.0 (42%) | |||||||||||||||
right | fishing rod | 328 | II: 19.4 | 38.1 | 195.1 | 1.58 (83%) | |||||||||||||||
Left | Emmerbach | 326 | II: 22.0 | 35.6 | 138.4 | ||||||||||||||||
right | Bever ← Sussbach | 318 | I: 271.1 | 39.4 / 41.7 | 217.0 | ||||||||||||||||
right | Remseder Bach | 3182 | II: 24.3 | 16.5 / 17.4 | 55.3 | Q. in Hilter | |||||||||||||||
Left | Südbach | 31822 | III: 12.9 | 4.5 | 8.8 |
Q. in Dissen |
|||||||||||||||
right | Hessel | 316 | I: 287.3 | 5.5 lower Warendorf | 39.3 | 212.5 | Q. between Borgholzhausen u. Hall | ||||||||||||||
Left | Axtbach | 314 | I: 296.7 | 4 ob. Warendorf | 34.2 / 35.45 | 240 | |||||||||||||||
Left | Ludhoff's Bach | 31412 | II: 31.5 | 3.85 | 34.5 | ||||||||||||||||
right | Lutter | 3132 | I: 309.8 | 25.9 | 137.0 | Q. in Bielefeld - Gadderbaum with bifurcation towards the Weser | |||||||||||||||
right | Dalkebach ← Bullerbach | 312 | I: 318.7 | 24.0 / 36.4 | 245.6 | Q. in Bielefeld - Sennestadt | |||||||||||||||
Left | Wapelbach (Wapel) | 3128 | II: 0.9 | 35.5 / | 164.8 | Q-II: 36.4 | |||||||||||||||
right | Ölbach | 31284 | III: 4.5 | 3 km ONO Rheda | 29.5 | 81.1 | Q. ob. Stukenbrock | ||||||||||||||
↑ Wehrbach (Wapel) | 3128 | 68.0 | |||||||||||||||||||
right | Sennebach ← Rahmke | 3114 | I: 337.8 | 1 km below Rietberg | 25.5 | 36.1 | |||||||||||||||
↑ Upper reaches of the Ems | 3 | 24.6 | 100.4 | ||||||||||||||||||
Left | Schwarzwasserbach | 31112 | I: 353.9 | Ems-Q-II: 8.6 | 6.0 | ||||||||||||||||
RE. ⇐ | Krollbach ( Glenne → Lippe → Rhine ) | 278414 | Q: 7.2 | Hövelhof | 15.5 | Q-II: 13.2 and Q-I: 366.9 |
Web links
- Lower Saxony environmental maps, topics hydrology and flood protection
- ELWAS - Water portal of the state of North Rhine-Westphalia
- Waterschap Hunze en Aa's, Homepage with Waterkaart