Station 33 - Ygnacio Valley Fire, Concord.Station 31 - Danville Library, Danville.Station 29 - Rossmoor Community, Walnut Creek.Station 18 - Orinda Fire Station, Orinda.Station 11 - CCC Flood Control District, Martinez.Station 32 - EBRPD Bald Peak, Tilden Park.Rain Gauge List with links to CDECīelow is a list of the rain gauge stations with a link to their data at the California Data Exchange Center ( CDEC ). Use the HEC-DSSVue Tools>Math Functions>General tab>Replace Specific Values pull down menu to change these. So that they would be flagged as missing, but would not skew the data plots in DSSVue, missing data has been set to equal -0.09999. The data is current as of June 30, 2011). Rainfall Data (NovaStar.zip) ( DSS file 3.9 MB updated -right click to download file) Data is in inches, is provisional and subject to revision. You will need HEC-DSSVue to view the data after unzipping the file. Where we have only 1 hour or 1 day data, we provide data at 1 hour or 1 day intervals. Where we have real time data (time stamped at each tip of the tipping bucket rain gauge) we provide data at 5 minute intervals. Rain Gauge Table (with detailed recent Antecedent Conditions)īelow is link to a HEC-DSS file that contains much of our rainfall data.Google Earth Rain and Stream Gauges (kmz). ![]() You can easily find the data via our Rain Map and other links on this page. We collect the data from our rain gauges and publish it online every 20 minutes. The average value from all these simulations are then recorded.The Flood Control District manages 30 rain gauges. With all available gages within 40 miles of Downtown Phoenix, 30 gages are randomly selected and their average and percent with measurable rain are computed. To generate the averages, a Monte Carlo simulation is used. The most common error will be light precip amounts at individual gages when no rain actually occurred. Also, please be aware that the rainfall data are only passed through minimal quality control mechanisms. When this happens it is reflective of either a very light or very isolated precipitation event. Coupled with mathematical rounding, it is very likely there will be days when precipitation falls across the PMA yet the average rainfall is 0.00". ![]() ![]() Therefore, any precipitation less than 1 mm/0.04" will not be measured by the rain gages. The FCD rain gages measure precipitation in millimeters (increments of 0.04"). ![]() The PRI, based on rain observed within 40 miles of Downtown Phoenix from the Maricopa County Flood Control District's network of ALERT rain gauges across the PMA, provides an average rainfall amount and what percent of gages measured rain. To offer a companion measurement to the official observations at KPHX, the Phoenix Rainfall Index (PRI) was been created. This is especially true during the monsoon. While KPHX did a good job of reprenting rainfall of Phoenix when it was smaller, with the vast sprawl of the area now there are times where portions of the PMA receive rain while other, including KPHX, do not. Since 1933, it has resided at Phoenix Sky Harbor International Airport (KPHX). Historically, the official rain gauge for the Phoenix Metropolitan Area (PMA) has been situated near the center of the city. Phoenix, Arizona is a vast, sprawling metropolis which covers an area of nearly 2000 sq-mi.
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