| Number (In Section 4, octet 11) |
Parameter | Units |
Abbrev |
|---|---|---|---|
| 0 |
Flash Flood Guidance (Encoded as an
accumulation over a floating subinterval of time between the reference
time and valid time) |
kg m-2 |
FFLDG |
| 1 |
Flash Flood Runoff (Encoded as an accumulation over a floating subinterval
of time) |
kg m-2 | FFLDRO |
| 2 |
Remotely Sensed Snow Cover (see Note 1) |
See Table 4.215 |
RSSC |
| 3 |
Elevation of Snow-Covered Terrain (see Note 2) |
See Table 4.216 | ESCT |
| 4 |
Snow Water Equivalent Percent of Normal (see Note 3) |
% |
SWEPON |
| 5 |
Baseflow-Groundwater Runoff | kg m-2 | BGRUN |
| 6 | Storm Surface Runoff | kg m-2 | SSRUN |
| 7 | Discharge from Rivers or Streams | m3 s-1 | DISRS |
| 8 | Group Water Upper Storage | kg m-2 | GWUPS |
| 9 | Group Water Lower Storage | kg m-2 | GWLOWS |
| 10 | Side Flow into River Channel | m3 s-1 m-1 | SFLORC |
| 11 | River Storage of Water | m3 | RVERSW |
| 12 | Flood Plain Storage of Water | m3 | FLDPSW |
| 13 | Depth of Water on Soil Surface | kg m-2 | DEPWSS |
| 14 | Upstream Accumulated Precipitation | kg m-2 | UPAPCP |
| 15 | Upstream Accumulated Snow Melt (see Note 4) | kg m-2 | UPASM |
| 16 | Percolation Rate | kg m-2 s-1 | PERRATE |
| 17 | River outflow of water | m3 s-1 | RVEROW |
| 18 | Floodplain outflow of water | m3 s-1 | FLDPOW |
| 19 | Floodpath outflow of water | m3 s-1 | FLDPATHOW |
| 20 | Water on surface | kg m-2 | WATSURF |
| 21 | Water Surface Elevation (see Note 5) | m | WSE |
| 22 | Groundwater Return Flow Rate (see Note 6) | m3 s-1 | GRFR |
| 23 | River and Floodplain Storage (see Note 7) | m3 | RVERFLDPS |
| 24 | Depth Averaged River Velocity (see Note 8) | m s-1 | DARVERVEL |
| 25-191 | Reserved | ||
| 192-254 |
Reserved for Local Use |
||
| 192 |
Baseflow-Groundwater Runoff | kg m-2 | BGRUN |
| 193 |
Storm Surface Runoff | kg m-2 | SSRUN |
| 194 |
Flood Hazard Outlook | FHO |
|
| 196 |
Area Hydrologic Discussion | AHD |
|
| 255 |
Missing |
| Notes: (1) Remotely sensed snow cover is expressed as a field of dimensionless, thematic values. The currently accepted values are for no-snow/no-cloud, 50, for clouds, 100, and for snow, 250. See code table 4.215. (2) A data field representing snow coverage by elevation protrays at which elevations there is a snow pack. The elevation values typically range from 0 to 90 in 100m increments. A value of 253 is used to represent a no-snow/no-cloud data point. A value of 254 is used to represent a data point at which snow elevation could not be estimated because of clouds obscuring the remote sensor (when using aircraft or satellite measurements). (3) Snow water equivalent percent of normal is stored in percent of normal units. For example, a value of 110 indicates 110 percent of the normal snow water equivalent for a given depth of snow. (4) It is recommended to use Snow melt rate instead (discipline 2, category 0, number 41). (5) Water surface elevation in the river and floodplains defined by the model as base elevation. (6) Water flow from the groundwater storage to the main river channel. (7) The amount of water stored in the main river channel and on the floodplain within a grid cell. The term storage refers to the total volume of water. This entry is the sum of entries 11 and 12. (8) River flow velocity computed along the river network. It represents the mean speed of water movement in a cross-section of the river channel. |