| Column title | Description | Number of occurrences |
|---|
| Grand_id | Unique ID for each point representing a dam and its associated reservoir; the point location is an approximation of the dam location | 6862 |
| Res_name | Name of reservoir or lake (i.e. impounded water body) | 1931 |
| Dam_name | Name of dam structure | 6839 |
| Alt_name | "Alternative name of reservoir or dam (different spelling, different language, secondary name)" | 704 |
| River | Name of impounded river | 6501 |
| Alt_river | "Alternative name of impounded river (different spelling, different language, secondary name)" | 663 |
| Main_basin | Name of main basin | 2106 |
| Sub_basin | Name of sub-basin | 702 |
| Near_city | Name of nearest city | 4122 |
| Alt_city | "Alternative name of nearest city (different spelling, different language, secondary name)" | 282 |
| Admin_unit | Name of administrative unit | 5224 |
| Sec_admin | Secondary administrative unit (indicating dams or reservoirs that lie within or are associated with multiple administrative units) | 34 |
| Country | Name of country | 6862 |
| Sec_cntry | Secondary country (indicating international dams or reservoirs that lie within or are associated with multiple countries) | 47 |
| Year | Year (not further specified: year of construction; year of completion; year of commissioning; year of refurbishment/update; etc.) | 6454 |
| Alt_year | "Alternative year (not further specified: may indicate a multi-year construction phase, an update, or a secondary dam construction)" | 417 |
| Dam_hgt_m | Height of dam in meters | 6390 |
| Alt_hgt_m | Alternative height of dam (may indicate update or secondary dam construction) | 362 |
| Dam_len_m | Length of dam in meters | 5478 |
| Alt_len_m | Alternative length of dam (may indicate update or secondary dam construction) | 208 |
| Area_skm | Representative surface area of reservoir in square kilometers; consolidated from other ‘Area’ columns in the following order of priority: ‘Area_poly’ over ‘Area_rep’ over ‘Area_max’ over ‘Area_min’; exceptions apply if value in ‘Area_poly’ column seems unreliable or rounded; | 6841 |
| Area_poly | Surface area of associated reservoir polygon in square kilometers | 6824 |
| Area_rep | Most reliable reported surface area of reservoir in square kilometers | 4937 |
| Area_max | Maximum value of other reported surface areas in square kilometers | 156 |
| Area_min | Minimum value of other reported surface areas in square kilometers | 287 |
| Cap_mcm | Representative maximum storage capacity of reservoir in million cubic meters; consolidated from other ‘Cap’ columns in the following order of priority:‘Cap_max’ over ‘Cap_rep’ over ‘Cap_min’; exceptions apply if value in ‘Cap_max’ column seems unreliable or rounded | 6854 |
| Cap_max | Reported ‘maximum storage capacity’ in million cubic meters; | 2374 |
| Cap_rep | Reported ‘storage capacity’ in million cubic meters (value may refer to different types of storage capacity) | 6322 |
| Cap_min | Minimum value of other reported storage capacities in million cubic meters | 1115 |
| Depth_m | "Average depth of reservoir in meters; calculated as ratio between storage capacity (‘Cap_mcm’) and surface area (‘Area_skm’); values that are somewhat higher than the dam height (‘Dam_hgt_m’) may still be reasonable, e.g. if the storage capacity refers to the maximum volume yet the reservoir polygon represents a low-fill status; values capped at 1,000 indicate exceedingly high values, which may be due to inconsistencies in the data" | 6849 |
| Dis_avg_ls | Long-term (1961-90) average discharge at reservoir location in liters per second; value derived from HydroSHEDS flow routing scheme combined with WaterGAP2 runoff estimates at 15s resolution at point location of dam | 6862 |
| Dor_pc | "Degree of regulation (DOR) in percent; equivalent to “residence time” of water in the reservoir; calculated as ratio between storage capacity (‘Cap_mcm’) and total annual flow (derived from ‘Dis_avg_ls’); values capped at 10,000 indicate exceedingly high values, which may be due to inconsistencies in the data and/or incorrect allocation to the river network and the associated discharges" | 6854 |
| Elev_masl | Elevation of reservoir surface in meters above sea level; value derived from HydroSHEDS DEM at 15s resolution at point location of dam | 6862 |
| Catch_skm | Area of upstream catchment draining into the reservoir in square kilometers; value derived from HydroSHEDS at 15s resolution at point location of dam | 6862 |
| Catch_rep | Reported area of upstream catchment draining into reservoir in square kilometers | 1835 |
| Data_info | Supporting information on certain data issues: ‘Capacity from statistics’ = capacity derived from Eq. 1 or Eq. 2 (See Documentation) ‘Capacity estimated’ = capacity estimated from other available information ‘No polygon’ = no polygon available | 99 |
| Use_irri | Used for irrigation (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 2180 |
| Use_elec | Used for hydroelectricity production (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 2134 |
| Use_supp | Used for water supply (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 1509 |
| Use_fcon | Used for flood control (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 1079 |
| Use_recr | Used for recreation (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 1120 |
| Use_navi | Used for navigation (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 259 |
| Use_fish | Used for fisheries (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 203 |
| Use_pcon | Used for pollution control (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 51 |
| Use_live | Used for livestock water supply (‘Main’; ‘Major’; or ‘Sec’ = Secondary use) | 48 |
| Use_othr | Used for other purposes (‘Main’; ‘Major’; or ‘Sec’ = Secondary use); other purposes may include new or a mix of the above purposes | 478 |
| Main_use | Main purpose of reservoir: Irrigation; Hydroelectricity; Water supply; Flood control; Recreation; Navigation; Fisheries; Pollution control; Livestock; or Other | 5285 |
| Lake_ctrl | "Indicates whether a reservoir has been built at the location of an existing natural lake using a lake control structure; currently this column only contains limited entries; ‘Yes’ = lake control structure raises original lake level; ‘Enlarged’ = lake control structure enlarged the original lake surface area; ‘Maybe’ = not sure, but data seems to indicate a lake control structure" | 105 |
| Multi_dams | "Indicates whether there is more than one dam associated with this reservoir (e.g. main and saddle dam); if ‘Yes’, then columns ‘Alt_year’, ‘Alt_hgt_m’, and ‘Alt_len_m’ refer to the secondary dam" | 204 |
| Timeline | Indicates whether the status of a dam has changed or will change over time: Planned; Under construction; Replacement; Destroyed | 78 |
| Comments | Comments | 630 |
| Url | URL of related website | 1595 |
| Quality | Quality index: | 6862 |
| 1: Verified (location and data have been verified) | |
| 2: Good (location and data seem o.k. but have not all been verified) | |
| 3: Fair (some data discrepancies; missing data; or uncertainties) | |
| 4: Poor (significant data discrepancies of various kinds that indicate errors) | |
| 5: Unreliable (severe data discrepancies without reasonable explanation) | |
| Editor | Final data editor: ‘McGill’ = McGill University; ‘UNH’ = University of New Hampshire | 6862 |
| Long_dd | Longitude of point location of dam in decimal degrees | 6862 |
| Lat_dd | Latitude of point location of dam in decimal degrees | 6862 |
|