monitoring station – data from LT (Mēmele – Tabokine); Mouth MS: River Lielupe: 1 hydrochemical surveillance MS (Lielupe, 0.5 km below Kalnciems); 1 hydrological – flow monitoring station Oder Transboundary river CZ/DE/PL PL Total area: 118,840 km2 CZ: 6.1 % DE: 4.7 % PL: 89.2% PL: 1 station with hydrological and hydrochemical measurements (Krajnik,71.9 km from the mouth) DE: 2 hydrochemical stations (one of them on PL border), 3 hydrological stations CZ: 1 station with hydrological and hydrochemical measurements (border station, Chalupki 741.9 from the mouth) Neva Transboundary river BY/FI/RU RU Total area: 281,000 km2 BY: 0.3 % FI: 20.2 % RU:79.5 % RU: mouth hydrological station – 27 km from mouth and 4 chemical stations in each branch of Neva river (one-in 1.4 from mouth, three – in 0.025 km from mouth) Pregolya Transboundary river LT/PL/RU RU Total area: 15,500 km2 LT: 0.6 % PL: 51.1 % RU:48.3 % RU: chemical monitoring station -1 km from mouth; hydrological km and includes only nutrient fractions PL: PL Monitoring stations: Lyna 73.7 km (lack of flow data since year 2007; PL: In PLC-5.5 PL loads were calculated based on data from the river Lyna and Wegorapa with using average flow from years 1994-2003 and 2006)
Wegorapa 96.5 km (lack of flow data since 2007) Venta Transboundary river LT/LV LV Total area: 11,692 km2 LT: 44.3 % LV:55.7 LV: Border MS: 1 hydrochemical surveillance MS (Venta, 0.5 km below Nīgrande) ; Mouth MS : 1 hydrochemical surveillance MS (Venta, Vendzava, hidroprofils). 1 hydrological – flow monitoring station (Venta-Kuldīga). LT: 3 chemical stations (rivers Varduva, Venta, Vadakstis) near the LT/LV border and 1 hydrological station (river Venta) Barta Transboundary river LT/LV LV Total area: 2,016 km2 LT: 37.1 % LV: 62.9 % LT: 1 chemical station and 1 hydrological station in the Bartuva river near the LT/LV border Daugava EE/LT/RU/BY/LV LV Total area: 87,900 km2 EE: 0.2% LT: 2.2 % RU: 31.6 % BY: 38.2 % LV: 27.7 % LV: Border MS: 1 hydrochemical surveillance MS (Daugava, Piedruja, Latvia - Belarus boder); 1 hydrological – flow monitoring station (Daugava-Daugavpils) Mouth MS : 1 hydrochemical surveillance MS (Rīga reservoir, 1.0km below Lipši) ; 1 hydrological – flow monitoring station (Daugava-Jēkabpils). RU: chemical monitoring station at the RU/BY border; LT: 1 chemical and 1 hydrological station at the LT/BY border in the river Birveta (around 3 km away from the border) and 1 chemical and 1 hydrological station in the river Dysna (around 1.5 km away from the border) EE: river Pedetsi, no monitoring Nemunas RU/LV/BY/PL/LT LT Total area: 97,920 km2 LT: LT:
approach within the PLC-6 project, investigating the availability and continuity of point source and land use data and the expected nutrient retention in lakes and water courses. Based on these estimates, a decision will be taken as to whether to maintain the current approach (which assumes that the Norwegian contribution to the total load from each of these three rivers is negligible compared to the Swedish loads) or whether this approach should be re-evaluated and the rivers treated as conventional transboundary watercourses. continuity of point source and land use data during the PLC-6 project NO/SE SE Total area: 31,864 k m2 NO: 4.9 % SE: 95.1 % SE: SE: Sweden to investigate the availability and continuity of point source and land use data during the PLC-6 project Coast LV/Baltic Proper LT/LV LV Total area: 5,257 km2 LT: 14.2 % LV: 85.8 % LV: Bārta river: Border MS: 1 hydrochemical surveillance MS (Bārta, Latvia - Lithuania border); Mouth MS : 1 hydrochemical surveillance MS (Bārta, 0.2 km above Dūkupji, hidroprofils). 1 hydrological – flow monitoring station (Bārta-Dūkupji). LT: Bartuva is included separately in this list. There are no more significant transboundary coastal catchments shared between LT and LV Coast RU/ Baltic Proper (RU: Propose to refer this section to PL/RU RU Total area: km2 PL: 5 % RU: 5 %