Hydrologic data, 1965 - Department of Water Resources - State of ...

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All of the data presented here are in a monthly form, except the seasonal storage precipitation gage values which are obtained only at yearly intervals. More detailed daily and hourly data are available in the Department's files. The records of the climatological observers are used constantly to answer questions and guide the actions of public agencies, agricultural and commercial organizations, and indi- viduals, thereby helping them to benefit from the natural resources of the State of Califormia. Their records also form a basis for preparedness in case of state or national emergencies. The observer who each day faithfully records the readings of his instruments and the weather conditions at his station is performing a very valuable public service. Methods and Procedures The primary function of a climatological station is to provide a daily record of the precipitation, temperature, or other meteorological phenomena observed. This record serves as the basis for the climatological history of the station. Insofar as possible., each station is selected so that the meteorological record will be representative of the vicinity in which the station is located. The person taking the observations is called a "climatological observer" and the place where the observations are taken and recorded is called a "climatological station". In general, there are three types of climatological stations - namely, precipitation, temperature and precipitation, and evaporation stations. Precipitation measurements are made at the same time each day of the depth of rainfall, snow, and other forms of
precipitation, and records are kept of the character, type and time of occurrence. Each station is normally equipped with a nonrecording gage or a weighing-type recording gage. The 8-inch nonrecording gage consists of an overflow can, measuring tube, rainfall funnel, measuring stick, and support. To easily measure the rainfall depth to hundredths of an inch, the measuring tube has a cross-section area that is one-tenth the cross-section area of the funnel. Thus the amount of precipitation in the measuring tube is magnified by ten and is read directly on the graduated measuring stick. The weighing- type recording gage is designed to provide a continuous record of the intensity of rainfall as well as the depth of precipitation. It consists of a 8-inch diameter receiver through which precipitation is funnelled into a bucket resting on a weighing mechanism. The weight of the catch is recorded on a clock-driven chart or tape as inches of precipitation. Readings of the air temperature at the time of observation, and the maximum and minimum temperature between observations, are taken and recorded daily at temperature re- porting stations. They are equipped with maximum and minimum thermometers and an instrument shelter for protecting the thermometers while still maintaining the proper exposure. The minimum air temperature is the lowest temperature, using the Fahrenheit scale, that has occurred since the preceding reading and setting of the minimum thermometer. The maximum air temperature is the highest temperature that has occurred since the maximum thermometer was read and set. The maximum
Page 2: LIBRARY UNIVERSITY OF CALIFORNM DAV
Page 9 and 10: State of California THE RESOURCES A
Page 11 and 12: TABLE OP CONTENTS Page ORGANIZATION
Page 13 and 14: State of California The Resources A
Page 15 and 16: INTRODUCTION The Department of Wate
Page 19: Appendix A Climate
Page 24 and 25: and minimum data are recorded on th
Page 26 and 27: EXPLANATION OF TABLES Table A-l, "I
Page 28 and 29: Table A-2, "Precipitation Data for
Page 30 and 31: TABLE A-l INDEX OF CLIMATOLOGICAL S
Page 32 and 33: TABLE A-l (Continued) INDEX OF CLIM
Page 40 and 41: Station SACRAMENTO RIVER BASIN SACR
Page 42 and 43: Station TABLE A-2 (Continued) PRECI
Page 44 and 45: Station SACRAMENTO RIVER BASIN FEAT
Page 46 and 47: Station SACRAMENTO RIVER BASIN CACH
Page 48 and 49: Station TABLE A-2 (Continued) PRECI
Page 50 and 51: Station TABLE A-3 STORAGE PRECIPITA
Page 52 and 53: Station SACRAMENTO RIVER BASIM SACR
Page 54 and 55: Station TABLE A-4 (Continued) TEMPE
Page 56 and 57: TABLE A-4 (Continued) TEMPERATURE D
Page 58 and 59: Stotion TABLE A-4 (Continued) TEMPE
Page 66 and 67: Station TABLE A-5 EVAPORATION DATA
Page 68 and 69: TABLE A-5 (Continued) EVAPORATION D
Page 71: Sheet I of 3 Sheets PLATE A- A-l LE
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Hydrologic data, 1965 - Department of Water Resources - State of ...

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