Continent: |
Europe | Latitude: |
55.05 | deg. |
Country: |
Russia | Longitude: |
36.60 |
deg. |
River: |
Protva | Elevation: |
119.0 |
m |
Station: |
Spas-Zagore | Area: |
3640.0 |
km2 |
| Mean for Observation Period: | 1937 | - | 1985 | Total months: | 582 |
| - | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| m3/c | 7.27 | 7.01 | 16.0 | 112. | 21.7 | 10.6 | 8.89 | 9.14 | 10.1 | 11.4 | 12.6 | 10.1 | 19.8 |
| mm | 5.35 | 4.70 | 11.7 | 80.0 | 15.9 | 7.57 | 6.54 | 6.73 | 7.16 | 8.41 | 8.96 | 7.46 | 171. |
| km3 | 0.019 | 0.017 | 0.043 | 0.29 | 0.058 | 0.028 | 0.024 | 0.024 | 0.026 | 0.031 | 0.033 | 0.027 | 0.62 |
| l/s/km2 | 2.00 | 1.93 | 4.38 | 30.9 | 5.95 | 2.92 | 2.44 | 2.51 | 2.76 | 3.14 | 3.46 | 2.79 | 5.43 |
| %% | 3.07 | 2.96 | 6.73 | 47.4 | 9.13 | 4.48 | 3.75 | 3.85 | 4.24 | 4.82 | 5.30 | 4.28 | 100. |
Protva at Spas-Zagore
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| 1937 | - | - | - | 73.1 | 8.63 | 5.37 | 5.13 | 5.17 | 5.00 | 5.31 | 5.20 | 6.72 | - |
| 1938 | 5.25 | 5.63 | 63.3 | 59.5 | 20.4 | 5.46 | 4.62 | 4.29 | 4.43 | 4.59 | 5.22 | 3.99 | 15.6 |
| 1939 | 10.3 | 10.2 | 42.2 | 107. | 19.3 | 5.46 | 4.41 | 4.21 | 4.29 | 4.60 | 4.44 | 5.11 | 18.5 |
| 1940 | 4.07 | 3.96 | 7.21 | 113. | 8.14 | 4.88 | 4.67 | 6.14 | 6.37 | 9.79 | 9.80 | 5.17 | 15.3 |
| 1941 | 4.62 | 4.58 | 5.55 | 130. | 43.6 | 8.42 | 4.92 | 5.00 | 5.38 | - | - | - | - |
| 1942 | 6.32 | 6.21 | 6.68 | 138. | 18.5 | 58.3 | 11.5 | 15.2 | 5.46 | 6.54 | 5.29 | 6.08 | 23.7 |
| 1943 | 7.46 | 6.58 | 7.93 | 104. | 9.39 | 6.52 | 20.9 | 7.45 | 4.97 | 5.06 | 5.31 | 6.09 | 16.0 |
| 1944 | 5.67 | 5.82 | 7.37 | 122. | 30.0 | 8.46 | 6.23 | 6.19 | 6.08 | 6.21 | 6.22 | 5.79 | 18.0 |
| 1945 | 4.25 | 5.28 | 6.87 | 71.2 | 10.6 | 6.73 | 6.45 | 18.5 | 14.7 | 25.1 | 11.7 | 6.10 | 15.6 |
| 1946 | 4.71 | 4.88 | 5.73 | 166. | 35.2 | 6.69 | 5.86 | 6.09 | 10.9 | 14.5 | 7.14 | 5.81 | 22.8 |
| 1947 | 5.51 | 4.16 | 14.4 | 213. | 26.5 | 10.0 | 5.64 | 5.58 | 6.35 | 6.66 | 9.11 | 16.2 | 26.9 |
| 1948 | 10.7 | 10.4 | 7.92 | 131. | 15.0 | 10.7 | 6.19 | 5.84 | 6.55 | 6.58 | 9.52 | 8.25 | 19.1 |
| 1949 | 5.60 | 6.36 | 8.01 | 82.7 | 9.87 | 6.95 | 22.4 | 9.25 | 6.45 | 5.79 | 5.80 | 7.58 | 14.7 |
| 1950 | 3.96 | 4.49 | 8.54 | 59.3 | 6.33 | 7.20 | 9.02 | 24.3 | 8.69 | 7.25 | 18.6 | 8.30 | 13.8 |
| 1951 | 5.08 | 4.96 | 45.8 | 98.4 | 33.1 | 6.72 | 5.02 | 5.14 | 5.26 | 4.62 | 4.36 | 6.11 | 18.7 |
| 1952 | 5.38 | 5.07 | 4.89 | 115. | 15.3 | 6.68 | 7.18 | 6.01 | 6.26 | 34.5 | 45.6 | 9.23 | 21.8 |
| 1953 | 7.84 | 5.74 | 10.7 | 125. | 13.6 | 6.24 | 7.58 | 7.74 | 29.9 | 26.4 | 10.2 | 10.5 | 21.8 |
| 1954 | 5.96 | 5.68 | 9.57 | 99.4 | 34.4 | 6.35 | 4.82 | 4.87 | 6.39 | 10.6 | 10.1 | 5.83 | 17.0 |
| 1955 | 5.74 | 6.94 | 6.60 | 147. | 80.2 | 10.8 | 6.38 | 5.25 | 5.78 | 6.83 | 6.99 | 5.33 | 24.5 |
| 1956 | 5.42 | 4.81 | 5.80 | 115. | 25.2 | 11.2 | 6.65 | 7.22 | 8.10 | 6.78 | 6.38 | 6.78 | 17.4 |
| 1957 | 6.50 | 8.92 | 9.00 | 137. | 12.3 | 10.5 | 8.29 | 8.24 | 9.00 | 11.5 | 7.85 | 7.12 | 19.7 |
| 1958 | 6.76 | 6.42 | 6.98 | 203. | 32.2 | 9.50 | 6.84 | 8.62 | 9.05 | 14.5 | 11.3 | 13.2 | 27.4 |
| 1959 | 9.17 | 7.87 | 9.74 | 118. | 15.9 | 10.3 | 8.79 | 6.07 | 7.20 | 7.10 | 7.80 | 4.90 | 17.7 |
| 1960 | 6.46 | 5.86 | 5.86 | 102. | 38.6 | 7.08 | 5.68 | 17.6 | 36.7 | 23.2 | 47.7 | 29.3 | 27.2 |
| 1961 | 15.8 | 10.1 | 36.1 | 102. | 13.5 | 8.40 | 9.03 | 8.22 | 11.0 | 8.00 | 8.36 | 13.0 | 20.3 |
| 1962 | 7.84 | 7.65 | 8.48 | 128. | 19.4 | 20.7 | 18.1 | 20.1 | 14.3 | 13.1 | 24.7 | 14.8 | 24.8 |
| 1963 | 7.71 | 7.52 | 7.81 | 165. | 24.3 | 13.9 | 7.73 | 7.31 | 8.09 | 7.30 | 7.79 | 6.24 | 22.6 |
| 1964 | 5.79 | 5.93 | 5.85 | 90.8 | 19.1 | 7.03 | 5.34 | 4.92 | 5.88 | 5.32 | 5.90 | 7.68 | 14.1 |
| 1965 | 4.71 | 5.12 | 4.69 | 31.5 | 14.5 | 10.1 | 10.3 | 11.8 | 7.62 | 6.87 | 6.04 | 21.4 | 11.2 |
| 1966 | 7.26 | 6.70 | 25.2 | 223. | 14.5 | 8.70 | 7.18 | 7.41 | 8.05 | 6.26 | 7.08 | 6.68 | 27.3 |
| 1967 | 5.65 | 5.83 | 6.77 | 169. | 12.9 | 7.02 | 4.10 | 5.35 | 7.24 | 5.37 | 5.22 | 4.11 | 19.9 |
| 1968 | 4.98 | 4.75 | 7.56 | 96.7 | 7.70 | 5.61 | 5.42 | 5.13 | 5.58 | 6.27 | 5.59 | 4.73 | 13.3 |
| 1969 | 4.18 | 3.43 | 5.81 | 83.3 | 9.87 | 7.64 | 5.92 | 6.21 | 6.60 | 5.79 | 13.1 | 11.5 | 13.6 |
| 1970 | 6.13 | 6.33 | 5.52 | 276. | 26.6 | 7.31 | 7.22 | 5.11 | 5.99 | 8.31 | 13.4 | 8.41 | 31.4 |
| 1971 | 9.19 | 7.09 | 20.1 | 54.6 | 15.1 | 8.23 | 6.28 | 5.79 | 8.41 | 27.4 | 22.9 | 11.6 | 16.4 |
| 1972 | 6.27 | 4.90 | 29.9 | 92.5 | 9.41 | 7.86 | 6.21 | 4.09 | 5.82 | 7.35 | 8.50 | 8.02 | 15.9 |
| 1973 | 4.34 | 5.29 | 17.7 | 66.5 | 18.8 | 5.89 | 6.53 | 16.3 | 15.3 | 22.4 | 36.3 | 11.1 | 18.9 |
| 1974 | 6.89 | 12.4 | 37.3 | 66.1 | 38.6 | 20.1 | 14.6 | 8.61 | 8.57 | 8.52 | 14.0 | 10.9 | 20.5 |
| 1975 | 14.3 | 12.2 | 35.6 | 50.8 | 8.00 | 8.51 | 6.38 | 6.75 | 7.33 | 7.09 | 5.96 | 5.14 | 14.0 |
| 1976 | 6.28 | 5.42 | 6.84 | 84.9 | 31.2 | 23.5 | 7.24 | 7.66 | 7.99 | 10.2 | 9.82 | 9.23 | 17.5 |
| 1977 | 5.66 | 6.76 | 19.4 | 106. | 14.4 | 13.2 | 7.43 | 8.46 | 9.66 | 7.86 | 14.3 | 9.85 | 18.6 |
| 1978 | 5.72 | 8.52 | 11.9 | 69.9 | 27.5 | 22.1 | 10.4 | 9.75 | 11.8 | 14.3 | 19.2 | 17.0 | 19.0 |
| 1979 | 7.64 | 8.65 | 11.8 | 120. | 29.2 | 6.83 | 9.06 | 10.8 | 11.9 | 12.0 | 13.1 | 21.5 | 21.9 |
| 1980 | 9.28 | 8.50 | 8.42 | 86.0 | 39.5 | 12.9 | 31.8 | 29.0 | 31.8 | 13.4 | 12.8 | 13.9 | 24.8 |
| 1981 | 13.1 | 10.5 | 53.6 | 82.2 | 25.3 | 9.19 | 6.77 | 7.70 | 17.9 | 17.3 | 17.2 | 16.0 | 23.1 |
| 1982 | 12.1 | 12.0 | 17.6 | 141. | 26.1 | 12.4 | 12.1 | 15.0 | 13.1 | 14.7 | 22.3 | 19.8 | 26.5 |
| 1983 | 15.0 | 12.9 | 56.5 | 81.3 | 13.7 | 11.2 | 17.2 | 10.8 | 12.6 | 17.7 | 10.6 | 21.4 | 23.4 |
| 1984 | 12.0 | 9.01 | 9.54 | 71.0 | 12.7 | 11.4 | 16.1 | 15.0 | 13.3 | 17.9 | 13.8 | 10.0 | 17.6 |
| 1985 | 8.53 | 8.32 | 9.23 | 140. | 27.2 | 14.6 | 11.9 | 10.7 | 17.6 | 23.7 | 24.1 | 13.4 | 25.8 |