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Report on the lands of the arid region of the United States, with a more detailed account of the lands of UtahPowell, John Wesley

History

Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah

Name: Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah
Author: Powell, John Wesley

Powell, John Wesley

Irrigation -- Utah; Irrigation -- West (U.S.); Public lands -- United States; Rain and rainfall -- West (U.S.)

+-----------------+-------+-------+---------------------------------+
 |                 |       |       |  Percentage of annual rainfall. |
 |                 |       |       +---------------------------------+
 |                 |Extent | Mean  |Spring.                  |       |
 |    Station.     | of    |annual |     |Summer.            |Winter |
 |                 |record.| rain- |     |     |Autumn.      |  and  |
 |                 |       | fall. |     |     |     |Winter.|spring.|
 +-----------------+-------+-------+-----+-----+-----+-------+-------+
 |                 | Y. M. |Inches.|     |     |     |       |       |
 |Alcatraz Island  |  9  5 | 16.49 |  16 |  0  |  11 |   73  |   89  |
 |Angel Island     |  5 11 | 18.58 |  19 |  0  |  15 |   66  |   85  |
 |Benicia Barracks | 18  3 | 14.90 |  28 |  1  |  15 |   56  |   84  |
 |Fort Miller      |  6  9 | 19.00 |  38 |  0  |  16 |   46  |   84  |
 |Fort Point       | 14 11 | 17.36 |  21 |  0  |  13 |   66  |   87  |
 |Monterey         | 12  3 | 15.71 |  28 |  2  |  14 |   56  |   84  |
 |Sacramento       | 18  3 | 19.24 |  29 |  1  |  14 |   56  |   85  |
 |San Francisco;   | 20  2 | 20.29 |  24 |  2  |  13 |   61  |   85  |
 |   Presidio      | 20  2 | 20.29 |  24 |  2  |  13 |   61  |   85  |
 |San Francisco    | 24  4 | 21.49 |  24 |  1  |  14 |   61  |   85  |
 |                 +-------+-------+-----+-----+-----+-------+-------+
 | Weighted means  |  --   |  --   |  25 |  1  |  14 |   60  |   85  |
 +-----------------+-------+-------+-----+-----+-----+-------+-------+
  Total extent of record = 130 years.  Mean of yearly rainfalls = 15.90.

_Second District._--In the San Francisco Region a rainy season is still
more definitely marked, but occurs at a different time of year. It will
be seen by Tables III and VIII that no rain falls in summer, while the
winter months receive 60 per cent. of the annual precipitation, and
the spring 25 per cent. The general yearly rainfall of the district is
only about 16 inches, but by this remarkable concentration a period of
five months is made to receive 13 inches. The winter temperature of the
district is no less remarkable, and supplies the remaining condition
essential to agriculture. Frosts are rare, and in the valleys all the
precipitation has the form of rain. The nine stations which afford the
rainfall records given above show a mean spring temperature of 57° (see
Table IX). Thirteen inches of rain coming in a frostless winter and
spring have been found sufficient for remunerative agriculture.


   TABLE IX.--_Mean temperatures, by seasons, for the San Francisco
                               Region._

Public-domain text, read in full here on John Shaqi.

Opening the text

Report on the lands of the arid region of the United States, with a more detailed account of the lands of UtahPowell, John Wesley

History

Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah

Powell, John Wesley

Irrigation -- Utah; Irrigation -- West (U.S.); Public lands -- United States; Rain and rainfall -- West (U.S.)

+-----------------+-------+-------+---------------------------------+
 |                 |       |       |  Percentage of annual rainfall. |
 |                 |       |       +---------------------------------+
 |                 |Extent | Mean  |Spring.                  |       |
 |    Station.     | of    |annual |     |Summer.            |Winter |
 |                 |record.| rain- |     |     |Autumn.      |  and  |
 |                 |       | fall. |     |     |     |Winter.|spring.|
 +-----------------+-------+-------+-----+-----+-----+-------+-------+
 |                 | Y. M. |Inches.|     |     |     |       |       |
 |Alcatraz Island  |  9  5 | 16.49 |  16 |  0  |  11 |   73  |   89  |
 |Angel Island     |  5 11 | 18.58 |  19 |  0  |  15 |   66  |   85  |
 |Benicia Barracks | 18  3 | 14.90 |  28 |  1  |  15 |   56  |   84  |
 |Fort Miller      |  6  9 | 19.00 |  38 |  0  |  16 |   46  |   84  |
 |Fort Point       | 14 11 | 17.36 |  21 |  0  |  13 |   66  |   87  |
 |Monterey         | 12  3 | 15.71 |  28 |  2  |  14 |   56  |   84  |
 |Sacramento       | 18  3 | 19.24 |  29 |  1  |  14 |   56  |   85  |
 |San Francisco;   | 20  2 | 20.29 |  24 |  2  |  13 |   61  |   85  |
 |   Presidio      | 20  2 | 20.29 |  24 |  2  |  13 |   61  |   85  |
 |San Francisco    | 24  4 | 21.49 |  24 |  1  |  14 |   61  |   85  |
 |                 +-------+-------+-----+-----+-----+-------+-------+
 | Weighted means  |  --   |  --   |  25 |  1  |  14 |   60  |   85  |
 +-----------------+-------+-------+-----+-----+-----+-------+-------+
  Total extent of record = 130 years.  Mean of yearly rainfalls = 15.90.

_Second District._--In the San Francisco Region a rainy season is still
more definitely marked, but occurs at a different time of year. It will
be seen by Tables III and VIII that no rain falls in summer, while the
winter months receive 60 per cent. of the annual precipitation, and
the spring 25 per cent. The general yearly rainfall of the district is
only about 16 inches, but by this remarkable concentration a period of
five months is made to receive 13 inches. The winter temperature of the
district is no less remarkable, and supplies the remaining condition
essential to agriculture. Frosts are rare, and in the valleys all the
precipitation has the form of rain. The nine stations which afford the
rainfall records given above show a mean spring temperature of 57° (see
Table IX). Thirteen inches of rain coming in a frostless winter and
spring have been found sufficient for remunerative agriculture.


   TABLE IX.--_Mean temperatures, by seasons, for the San Francisco
                               Region._

Public-domain text, read in full here on John Shaqi.

Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah

Report on the lands of the arid region of the United States, with a more detailed account of the lands of Utah

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