Division Water category Rivers Geographical Intercalibration Group Eastern Continental rivers

United Kingdom

Description of types that have been intercalibrated

Type	River characterisation	Ecoregion	Catchment (km²)	Altitude (m a.s.l.)	Geology	Substrate
R-E1a	Carpathians: small to medium, mid-altitude	10	10 — 1 000	500 — 800	Mixed
R-E1b	Carpathians: small to medium, mid-altitude	10	10 — 1 000	200 — 500	Mixed
R-E2	Plains: medium-sized, lowland	11 and 12	100 — 1 000	< 200	Mixed	Sand and silt
R-E3	Plains: large, lowland	11 and 12	> 1 000	< 200	Mixed	Sand, silt and gravel
R-E4	Plains: medium-sized, mid-altitude	11 and 12	100 — 1 000	200 — 500	Mixed	Sand and gravel
R-EX4	Large, mid-altitude	10, 11 and 12	> 1 000	200 — 500	Mixed	Gravel and boulder
R-EX5	Plains: small lowland	11 and 12	10 — 100	< 200	Mixed	Sand and silt
R-EX6	Plains: small, mid-altitude	11 and 12	10 — 100	200 — 500	Mixed	Gravel
R-EX7	Balkan: small, calcareous, mid-altitude	5	10 — 100	200 — 500	Calcareous	Gravel
R-EX8	Balkan: small to medium-sized, calcareous karst spring	5	10 — 1 000		Calcareous	Gravel, sand and silt

Countries sharing types that have been intercalibrated:

R-E1a:

Bulgaria, Czech Republic, Romania, Slovakia

R-E1b:

Bulgaria, Czech Republic, Hungary, Romania, Slovakia

R-E2:

Bulgaria, Czech Republic, Hungary, Romania, Slovakia, Slovenia

R-E3:

Bulgaria, Czech Republic, Hungary, Romania, Slovakia, Slovenia

R-E4:

Austria, Czech Republic, Bulgaria, Hungary, Romania, Slovakia, Slovenia

R-EX4:

Czech Republic, Romania, Slovakia

R-EX5:

Hungary, Romania, Slovenia, Slovakia

R-EX6:

Hungary, Romania, Slovenia

R-EX7:

Slovenia

R-EX8:

Slovenia