The monitoring network within this area

Hydrionis holds 2,204,395 values from 109 gauges within it. Discharge is a property of a gauge and its reach, not of this drainage area, so this page reports the network and its records rather than a single figure.

109

Gauges

2,204,395

Values held

1896–2026

Record spans

Gauges within the Kymijoki drainage basin

109 monitoring points, positioned as the publisher records them.

The longest record here

Mean river flow at Konnevesi - luusua

Annual means of the daily record, 1910–2025. One gauge, not this drainage area.

Annual means computed by Hydrionis from the published daily record, drawn only for years with at least 300 days held. They summarise this gauge's own record and say nothing about any other watercourse in this area.

View the data behind this chart

Underlying data
Period	Konnevesi - luusua (m³/s)
1910	47.3
1911	45.3
1912	63.9
1913	49.7
1914	30.9
1915	31.8
1916	38.9
1917	44.6
1918	54.1
1919	50.3
1920	55.6
1921	32.1
1922	67.3
1923	63.3
1924	79.9
1925	51.0
1926	51.6
1927	61.0
1928	60.3
1929	60.0
1930	56.8
1931	69.8
1932	63.2
1933	37.8
1934	50.2
1935	66.4
1936	60.6
1937	32.9
1938	55.4
1939	39.3
1940	21.0
1941	19.4
1942	21.7
1943	63.4
1944	70.8
1945	56.8
1946	33.0
1947	30.8
1948	32.6
1949	46.3
1950	42.2
1951	40.8
1952	49.0
1953	52.3
1954	44.1
1955	66.5
1956	48.6
1957	66.2
1958	61.2
1959	46.3
1960	39.0
1961	48.6
1962	65.6
1963	47.6
1964	43.0
1965	49.3
1966	57.8
1967	67.0
1968	64.9
1969	50.7
1970	47.9
1971	60.9
1972	50.3
1973	50.1
1974	79.8
1975	71.3
1976	34.4
1977	64.3
1978	36.7
1979	40.9
1980	58.1
1981	80.3
1982	62.4
1983	60.1
1984	63.4
1985	48.8
1986	57.3
1987	69.5
1988	74.3
1989	54.5
1990	48.7
1991	50.1
1992	60.5
1993	55.6
1994	54.5
1995	56.2
1996	43.9
1997	46.3
1998	60.7
1999	46.0
2000	49.4
2001	58.2
2002	41.3
2003	37.7
2004	70.3
2005	60.1
2006	35.2
2007	53.4
2008	83.4
2009	50.7
2010	40.8
2011	47.3
2012	87.7
2013	60.3
2014	61.9
2015	64.1
2016	62.5
2017	49.6
2018	60.5
2019	37.6
2020	68.9
2021	69.2
2022	62.8
2023	66.2
2024	67.1
2025	49.0

Every gauge Hydrionis holds within this area

Gauges within the Kymijoki and what each holds
Gauge	Measures	Values	Record
Konnevesi - luusua	mean river flow	42,755	1909–2026
Muuruejärvi - luusua	mean river flow	42,599	1910–2026
Vuosjärvi, Huopanankoski	mean river flow	42,588	1910–2026
Rauhajärvi - luusua	mean river flow	42,581	1910–2026
Petäjävesi - luusua	mean river flow	42,576	1910–2026
Kalmarinjärvi - luusua	mean river flow	42,573	1910–2026
Jääsjärvi - luusua	mean river flow	42,540	1910–2026
Pääjärvi - luusua	mean river flow	42,222	1911–2026
Nilakka, Äyskoski	mean river flow	35,853	1896–1994
Ahvenkoski	mean river flow	34,127	1933–2026
Kymijoki, länsihaara	mean river flow	33,839	1934–2026
Keitele, Äänekoski	mean river flow	33,639	1934–2026
Anjala	mean river flow	32,265	1938–2026
Vahvajärvi - luusua	mean river flow	31,565	1940–2026
Vanginvesi - luusua	mean river flow	31,389	1910–2007
Saraavesi, Kuhankoski	mean river flow	31,283	1941–2026
Leppävesi, Vaajakoski	mean river flow	31,279	1941–2026
Kärnäjärvi, Kellankoski	mean river flow	31,250	1941–2026
Kuusankoski	mean river flow	31,244	1941–2026
Karankajärvi - luusua	mean river flow	31,019	1910–2026
Koivujärvi - luusua	mean river flow	30,072	1910–2005
Salosjärvi - luusua	mean river flow	29,950	1910–1991
Liekune, Kissakoski	mean river flow	28,221	1949–2026
Mankala	mean river flow	27,630	1951–2026
Saanijärvi - luusua	mean river flow	27,504	1951–2026
Kymijoki, kokonaisvirtaama	mean river flow	27,262	1941–2026
Koivukoski	mean river flow	26,531	1954–2026
Kivijärvi, Potmonkoski	mean river flow	25,683	1911–2026
Ala-Rieveli - luusua	mean river flow	25,567	1934–2003
Vatianjärvi - luusua	mean river flow	25,202	1909–1977
Kivijärvi, Hilmo	mean river flow	25,044	1958–2026
Kuhnamo, Kapeenkoski	mean river flow	24,883	1911–1992
Konnivesi, Vuolenkoski	mean river flow	24,435	1959–2026
Hankavesi - luusua	mean river flow	23,938	1961–2026
Niinivesi, Nokisenkoski	mean river flow	23,800	1929–1994
Kannuskoski	mean river flow	23,704	1961–2026
Leuhunkoski	mean river flow	23,613	1962–2026
Patalankoski	mean river flow	23,585	1962–2026
Lannevesi - luusua	mean river flow	23,517	1962–2026
Vuohijärvi, Siikakoski	mean river flow	23,229	1963–2026
Piirteenvirta	mean river flow	23,137	1934–2026
Jyräänkoski, pato	mean river flow	23,094	1963–2026
Voikkaa	mean river flow	22,863	1964–2026
Hirvikoski	mean river flow	21,965	1950–2026
Kiimasjärvi, Hietamankoski	mean river flow	21,422	1968–2026
Kiimasjärvi - luusua	mean river flow	20,941	1909–1966
Muuratjärvi - luusua	mean river flow	20,832	1969–2026
Ediskoski	mean river flow	20,690	1970–2026
Kymijoki, itähaara	mean river flow	20,687	1970–2026
Korkeakoski	mean river flow	20,687	1970–2026
Pyhäjärvi, Parantala	mean river flow	20,680	1970–2026
Päijänne, Kalkkinen	mean river flow	20,680	1970–2026
Piirteenvirta	mean river flow	20,663	1970–2026
Pernoonkoski+Hirvikoski	mean river flow	20,453	1900–1955
Pernoonkoski	mean river flow	20,418	1970–2026
Synsiä - luusua	mean river flow	20,281	1971–2026
Kyyvesi - luusua	mean river flow	20,088	1910–1965
Kynsivesi, Simuna	mean river flow	19,723	1910–1963
Päijänne, Kalkkinen	mean river flow	19,358	1911–1963
Kamponen - luusua	mean river flow	19,358	1910–1962
Armisvesi - luusua	mean river flow	19,156	1974–2026
Saarijärvi - luusua	mean river flow	18,993	1910–1961
Ylä-Kivijärvi - luusua	mean river flow	18,993	1910–1961
Vesijärvi, Vääksynjoki	mean river flow	18,126	1973–2026
Leivonvesi, Simuna	mean river flow	17,746	1978–2026
Kaurakoski	mean river flow	17,532	1901–1950
Palokkajärvi, Lohikoski	mean river flow	16,621	1967–2025
Pälämä - luusua	mean river flow	15,770	1983–2026
Konnivesi, Vuolenkoski	mean river flow	15,705	1909–1958
Saarijärvi - luusua	mean river flow	15,564	1984–2026
Sutela	mean river flow	15,519	1974–2026
Klåsarö	mean river flow	15,423	1984–2026
Paaskoski	mean river flow	15,403	1984–2026
Vesijako - Sumperinvirta	mean river flow	15,198	1985–2026
Volanjoki	mean river flow	14,654	1980–2020
Iso-Naakkima - luusua	mean river flow	14,481	1987–2026
Naarajärvi - luusua	mean river flow	14,479	1936–1981
Kalkkisten kanava	mean river flow	13,816	1964–2001
Päijännetunneli - Keravanjoki	mean river flow	13,538	1989–2026
Heitjärvi - luusua	mean river flow	13,149	1964–1999
Kuhnamo, Kapeenkoski	mean river flow	13,148	1946–1987
Kynsivesi, Simuna	mean river flow	13,027	1941–1978
Hirvivuolle	mean river flow	12,969	1941–1991
Arrakosken voimalaitos	mean river flow	12,678	1984–2026
Venekoski	mean river flow	12,195	1962–2007
Niinivesi, Nokisenkoski	mean river flow	11,926	1994–2026
Nilakka, Äyskoski	mean river flow	11,907	1994–2026
Keltti	mean river flow	11,666	1932–2026
Kuusankoski	mean river flow	11,230	1909–1939
Verla	mean river flow	11,167	1996–2026
Kolima - luusua	mean river flow	10,957	1921–1950
Myllykoski	mean river flow	9,758	1999–2026
Pihkoo	mean river flow	9,732	2000–2026
Kymijoki, itähaara	mean river flow	8,886	1954–1978
Piirteenvirta	mean river flow	8,035	1970–1991
Koivujoki	mean river flow	7,284	1975–1994
Villikkalanjoki	mean river flow	6,574	1970–1987
Leppävesi - luusua	mean river flow	6,071	1919–1946
Kolima - luusua	mean river flow	5,478	1937–1951
Pernoonkoski	mean river flow	5,173	1970–1984
Villikkalanjoki	mean river flow	4,384	1952–1964
Lummene, Harmoistenoja	mean river flow	4,017	1985–1995
Lummene, Porraskoski	mean river flow	4,017	1985–1995
Leppävesi - luusua	mean river flow	3,287	1910–1918
Suolivesi	mean river flow	2,349	2004–2010
Arrakosken kalatie	mean river flow	2,228	2019–2026
Päijänne, Kalkkinen	mean river flow	2,192	1964–1969
Puuppola	mean river flow	888	2008–2010
Koivujoki	mean river flow	730	1973–1974

How these gauges were attached to this water

Assigned by the publisher to a numbered basin Every gauge here is assigned to this drainage area by its own publisher, which issues the area an official code — 14. A drainage area is not a river: it contains the tributaries as well as the main channel, and a gauge in it may be on any of them.

What each gauge’s link to this water rests on
Gauge	Evidence	Established
Konnevesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Muuruejärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vuosjärvi, Huopanankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Rauhajärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Petäjävesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kalmarinjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Jääsjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pääjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Nilakka, Äyskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Ahvenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kymijoki, länsihaara	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Keitele, Äänekoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Anjala	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vahvajärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vanginvesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Saraavesi, Kuhankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Leppävesi, Vaajakoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kärnäjärvi, Kellankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kuusankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Karankajärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Koivujärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Salosjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Liekune, Kissakoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Mankala	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Saanijärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kymijoki, kokonaisvirtaama	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Koivukoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kivijärvi, Potmonkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Ala-Rieveli - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vatianjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kivijärvi, Hilmo	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kuhnamo, Kapeenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Konnivesi, Vuolenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Hankavesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Niinivesi, Nokisenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kannuskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Leuhunkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Patalankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Lannevesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vuohijärvi, Siikakoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Piirteenvirta	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Jyräänkoski, pato	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Voikkaa	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Hirvikoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kiimasjärvi, Hietamankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kiimasjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Muuratjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Ediskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kymijoki, itähaara	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Korkeakoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pyhäjärvi, Parantala	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Päijänne, Kalkkinen	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Piirteenvirta	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pernoonkoski+Hirvikoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pernoonkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Synsiä - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kyyvesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kynsivesi, Simuna	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Päijänne, Kalkkinen	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kamponen - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Armisvesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Saarijärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Ylä-Kivijärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vesijärvi, Vääksynjoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Leivonvesi, Simuna	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kaurakoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Palokkajärvi, Lohikoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pälämä - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Konnivesi, Vuolenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Saarijärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Sutela	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Klåsarö	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Paaskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Vesijako - Sumperinvirta	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Volanjoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Iso-Naakkima - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Naarajärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kalkkisten kanava	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Päijännetunneli - Keravanjoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Heitjärvi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kuhnamo, Kapeenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kynsivesi, Simuna	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Hirvivuolle	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Arrakosken voimalaitos	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Venekoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Niinivesi, Nokisenkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Nilakka, Äyskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Keltti	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kuusankoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Verla	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kolima - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Myllykoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pihkoo	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kymijoki, itähaara	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Piirteenvirta	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Koivujoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Villikkalanjoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Leppävesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Kolima - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Pernoonkoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Villikkalanjoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Lummene, Harmoistenoja	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Lummene, Porraskoski	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Leppävesi - luusua	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Suolivesi	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Arrakosken kalatie	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Päijänne, Kalkkinen	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Puuppola	Stated by the publisher on the record this gauge’s observations came from.	With the observations
Koivujoki	Stated by the publisher on the record this gauge’s observations came from.	With the observations

What this record holds

Hydrionis decides which waters get a page, and which of those are offered to search, from what is actually held rather than from how the page reads. Five signals are counted; this record has 3 of them, which makes it a full profile.

Information-gain signals held for this water body
Signal	Held	Counts
Gauges holding a real record	109	yes, 3 or more
Years spanned	131	yes, 20 or more
Values held	2,204,395	yes, 1000 or more
Distinct measurements	1	no
Publishers measuring it	1	no
Official identifiers	1	recorded, not counted

Where these figures come from

MeasuredHigh confidence2026-08-26

Source: Syke — Hydrologiarajapinta — Finnish national hydrological archive, 1403900. Licence: Open — attribution required (attribution required).

Method: Daily discharge exactly as the Finnish Environment Institute publishes it. Syke computes the daily value from its own measurement and rating curves; Hydrionis does not recompute it, because a mean derived from whatever sub-daily data happens to be exposed would be a different statistic under the same name. Values Syke flags as possibly erroneous are not stored.

13 of these values (under 1%) are interpolated by Syke rather than measured, and are marked as such in its own archive. Station in the Kymijoki main drainage basin, Konneveden la sub-basin. Discharge is a property of this gauge and this reach, not of the river as a whole.

Retrieved 26 August 2026.