Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Reservoir | Basin | Location | Type | Height (m) | Length along the top (m) | Drainage basin (km²) | Reservoir surface (ha) | Volume (hm³) |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Alfilorios | Barrea | Ribera de Arriba | Embankment | 67.0 | 171.7 | 4.09 | 52.0 | 9.140 |
| Arbón | Navia | Coaña , Villayón | Embankment | 35.0 | 180.0 | 2443.0 | 270.0 | 38.20 |
| Barca, La | Narcea | Belmonte , Tineo | Arch | 73.5 | 178.0 | 1216.0 | 194.0 | 31.10 |
| Doiras | Navia | Boal | Arch-gravity | 90.0 | 165.0 | 2288.0 | 347.0 | 114.60 |
| Florida, La | Narcea | Tineo | Gravity | 19.0 | 70.0 | 1005.0 | 18.40 | 0.75 |
| Furacón, El | Nalón | Trubia ( Oviedo ) | Gravity | 14.0 | 70.0 | 2180.0 | 19.0 | 0.522 |
| Granda, La | Granda | Gozón | Embankment | 23.7 | 270.0 | 1.25 | 32.50 | 3.208 |
| Jocica, La | Dobra | Amieva | Arch | 87.0 | 66.0 | 39.0 | 6.14 | 0.4 |
| Mortera, La | Mortera | Morcín | Gravity | 8.0 | 91.0 | 0.0 | 0.0 | 0.017 |
| Priañes | Nora | Oviedo , Las Regueras | Gravity | 27.0 | 50.0 | 340.0 | 35.17 | 1.9 |
| Saliencia | Saliencia | Somiedo | Gravity | 20.0 | 33.0 | 48.0 | 0.30 | 0.02 |
| Salime | Navia | Grandas de Salime | Gravity | 125.67 | 250.0 | 1806.0 | 685.0 | 266.30 |
| San Andrés Tacones | Aboño | S.A. Tacones ( Gijón ) | Embankment | 22.0 | 434.0 | 37.5 | 4.0 | 71.0 |
| Somiedo | Somiedo | Somiedo | Gravity | 24.0 | 18.0 | 82.0 | 0.29 | 0.018 |
| Tanes | Nalón | Caso , Sobrescobio | Gravity | 95.0 | 195.0 | 271.0 | 159.0 | 33.27 |
| Trasona | Alvares | Trasona ( Corvera ) | Gravity | 16.0 | 332.0 | 37.0 | 61.0 | 4.1 |
| Valdemurio | Trubia | Quirós | Gravity | 40.15 | 119.0 | 196.0 | 1.43 | 1.43 |
| Valduno II | Nalón | Las Regueras | Gravity | 9.9 | 105.0 | 2500.0 | 34.36 | 0.3 |
| Valle | Valle | Somiedo | Gravity | 12.5 | 52.8 | 39.0 | 23.7 | 3.7 |
Question:
What is listed in drainage basin when the type is gravity and the reservoir surface is 34.36?
Answer:
2500.0