| River: Helmand |
Area: 118000.0 km2 |
Latitude: 31.07 deg. |
| Station: Darwesan |
Elevation: - m |
Longitude: 64.10 deg. |
| Mean for observation period: 1956-1960 |
Total months: 48
|
| - |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| m3/s
|
213. |
194. |
217. |
651. |
661. |
320. |
164. |
128. |
135. |
134. |
118. |
191. |
260. |
| mm |
4.83 |
4.01 |
4.92 |
14.3 |
15.0 |
7.02 |
3.73 |
2.91 |
2.95 |
3.05 |
2.58 |
4.34 |
69.6 |
| km3
|
0.57 |
0.47 |
0.58 |
1.69 |
1.77 |
0.83 |
0.44 |
0.34 |
0.35 |
0.36 |
0.30 |
0.51 |
8.22 |
| l/s/km2
|
1.80 |
1.64 |
1.84 |
5.51 |
5.60 |
2.71 |
1.39 |
1.09 |
1.14 |
1.14 |
1.00 |
1.62 |
2.21 |
| %% |
6.81 |
6.21 |
6.94 |
20.8 |
21.2 |
10.2 |
5.25 |
4.11 |
4.30 |
4.30 |
3.76 |
6.11 |
100. |
Helmand at Darwesan
|
Year |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| 1956 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
108. |
142. |
156. |
-
|
| 1957 |
311. |
307. |
268. |
1590. |
1440. |
610. |
233. |
146. |
188. |
191. |
136. |
346. |
481.
|
| 1958 |
276. |
251. |
212. |
374. |
396. |
210. |
174. |
168. |
162. |
150. |
108. |
106. |
216.
|
| 1959 |
126. |
134. |
290. |
452. |
391. |
214. |
174. |
143. |
124. |
88.0 |
84.0 |
156. |
198.
|
| 1960 |
138. |
84.1 |
97.0 |
187. |
418. |
245. |
75.5 |
56.6 |
64.0 |
- |
- |
- |
-
|
Source: State Hydrological Institute, Russia
Water resources of Afghanistan / Helmand at Darwesan