Station report
Chief Joseph Dam, Washington Weather Station, in 3 sheets Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.
1 The column2 The sun3 The instrumentAt 990 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.87 inHg and the temperature at 55.5 F.
Section from sea level of where Chief Joseph Dam, Washington Weather Station stands in the atmosphere, height to scale: the station 990 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.87 inches of mercury, and temperature, 55.5 degrees Fahrenheit. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT USBR-CJDW FIG. D WHERE CHIEF JOSEPH DAM, WASHINGTON WEATHER STATION STANDS IN THE ATMOSPHERE SECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHERE FT ABOVE SEA LEVEL 0 5,000 10,000 15,000 SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERE CHIEF JOSEPH DAM, WASHINGTON WEATHER STATION 4 PER CENT OF THE AIR BELOW IT 990 FT 10 PER CENT OF THE AIR BELOW, 2,890 FT 20 PER CENT OF THE AIR BELOW, 6,050 FT 30 PER CENT OF THE AIR BELOW, 9,540 FT 40 PER CENT OF THE AIR BELOW, 13,470 FT STANDARD PRESSURE HERE 28.87 inHg STANDARD TEMPERATURE HERE 55.5 F TITLE Chief Joseph Dam, Washington Weather Station, the column STATION REPORT · DCP USBR-CJDW TYPE SECTION SCALE HEIGHT TO SCALE REV FROM THE REGISTER SHEET 1 of 3 DATE 2026-10-11 ID SR-USBRCJDW-1 DRAWN AS linework on paper SOURCES FB-ENG-001, FB-ENG-003 On Oct 11 the noon sun stands 35 degrees above the horizon at 47.99 N, and the day is 10 h 55 min long. Level ground there takes 57 per cent of the noon sunlight a surface facing the sun would.
Elevation of the noon sun at Chief Joseph Dam, Washington Weather Station, angles true: on Oct 11 it stands 35 degrees above the horizon, against 65 at the June solstice, 42 at the equinoxes and 19 at the December solstice; the day is 10 h 55 min long. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT USBR-CJDW FIG. E THE SUN AT CHIEF JOSEPH DAM, WASHINGTON WEATHER STATION ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUE THE STATION JUNE SOLSTICE 65° EQUINOXES 42° DECEMBER SOLSTICE 19° OCT 11, 35° SOUTH ANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLY DAY LENGTH 10 H 55 MIN LEVEL GROUND TAKES 57 PER CENT OF THE NOON SUN A FACING SURFACE WOULD LATITUDE 47.99 N; THE SUN'S DECLINATION -7.3° TITLE Chief Joseph Dam, Washington Weather Station, the sun STATION REPORT · DCP USBR-CJDW TYPE ELEVATION SCALE ANGLES TRUE REV FROM THE REGISTER SHEET 2 of 3 DATE 2026-10-11 ID SR-USBRCJDW-2 DRAWN AS linework on paper SOURCES FB-ENG-007 A data collection platform, 990 ft above sea level. Its sensors, as its network builds them.
Elevation of a data collection platform, Chief Joseph Dam, Washington Weather Station, each sensor drawn and labelled with what it read: no reading in the last day. 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 A A B B C C D D E E © 2026 STORM STATION 247 THE FIELD BOOK STATION REPORT USBR-CJDW FIG. F THE INSTRUMENT ELEVATION OF A DATA COLLECTION PLATFORM, EACH SENSOR WITH WHAT IT READ ANTENNA, SENDING BY SATELLITE - AIR TEMPERATURE - PRECIPITATION GAUGE - SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALE TITLE Chief Joseph Dam, Washington Weather Station, the instrument STATION REPORT · DCP USBR-CJDW TYPE ELEVATION SCALE SCHEMATIC REV FROM THE REGISTER SHEET 3 of 3 DATE 2026-10-11 ID SR-USBRCJDW-3 DRAWN AS linework on paper SOURCES FB-INS-001 
FB-ENG-001, Fig. AAtmosphere in section
FB-ENG-003, Fig. CHydrostatic balance
FB-ENG-007, Fig. ARadiation budget
FB-INS-001, Fig. AWhat an instrument is