Our san bernardino county hydrology manual was developed in 1983 and revised in 1986 by our consultant dr. San bernardino county flood control district, 1987, flood control system, southwest portion. San joaquin delta consists of the largest estuary on the west coast and drains more than 40 percent of the water in california. Solano county water agencys office is currently closed to the general public due to the covid19 situation. San bernardino county hydrology manual addendum, april 2010. He is the principal author of the hydrology manuals for the counties of san bernardino 1983, 1986, orange 1987, kern 1992, san joaquin 1996, and imperial 1996.
Technical guidance document for water management plan wqmp. The best available data at the time was the national oceanic and atmospheric administration noaa atlas il rainfall records and statistics published in 1973. District address 1995 market street riverside, ca 92501 phone. Excerpted, with minor revision, from the orange county water quality management plan dated september 26, 2003 and the san bernardino water quality management plan dated april 14, 2004 pollutant of concern 7 biofilters 2 detention basins 3 infiltration bmps 4 wet ponds or wetlands 5 filtration systems 6 water quality inlets hydrodynamic. They provide guidance in estimating peak discharges and volumes of storm water runoff for the design of flood control facilities and flood plain determination. Garrett geological survey watersupply paper 1419 prepared in cooperation with the san bernardino county flood control district. Hydraulic design manual san diego county, california. The guidelines and the hydrologic computation techniques in this manual are applicable for hydrologic and hydraulic studies and design beginning january 1994 and thereafter. The purpose of this study was to provide a preliminary drainage study to comply with submittal requirements of san bernardino county for cup purposes. The new 2006 hydrology and deficiency study benefits from the 2005 detailed color. Lid is an environmentally sound technology and an economically sustainable approach to addressing the adverse impacts urbanization can have on aquatic resources. Noaa atlas 2 noaa, 1973 served as the basis for the san bernardino hydrology manual dated 1986.
San bernardino county flood control district, 1975, biennial report, hydrologic and climatic data. You can reach a member of our staff by email or phone. The san bernardino area of southern california has complex watermanagement issues. The san bernardino basin lies near the eastern end of the valley of southern california. Lag time used in citycounty drainage manual volume 2. The purpose of this manual is to provide a uniform procedure for flood and stormwater analysis within san diego county. Eleven most significant storms were identified for detailed analysis. The usgs discharges are based on data through water year 2006 and were. The san bernardino county flood control district, the county of san bernardino, its department of public works, its officials and employees, hereinafter refer to as county makes no warranty of any kind for this information, expressed or implied, including but not limited to any warranties of merchantability or fitness for a particular purpose. Noaa, 2004, revised 2006, the county of san bernardino water resources division assessed the new publication towards the possibility of updating its hydrology manual 1983, revised 1986, particularly in the arid regions of the county. Geologic and hydrologic features of the san bernardino area california with special reference to underflow across the san jacinto fault by l. Surface water and groundwater information also was obtained from the hydrology manual. Sb county public works water resources hydrology monthly.
If you see a county storm drainage system in need of maintenance, contact the county department of public works field operations staff at 619 4431260 weekdays or contact the stormwater hotline at 1888 8460800. City of san bernardino issued 31488 department of public workscity engineer storm drain design policy. The standards set forth in this manual govern all hydrology calculations done under public works jurisdiction. When the sedimentation manual was developed, all information in the hydrology manual march 1989 edition related to sedimentation was transferred into this manual. Adequate water will be available to sustainably meet the needs of san bernardino county residents and businesses through 2040 only if water users continue to improve wateruse efficiency efforts and the public. Attachment a san bernardino county stormwater program. Arrowhead ave, 2nd floor san bernardino, ca 92415 fax. C san bernardino county hydrology manual selected figures. Statistical analysis of these rainfall records yields the average recurrence interval ari for the rainfall event compared with the historical record. With respect to water quality, the city of san diegos storm water stmdards manual sws. Hydrology standards report 6 stream flow measurement in small, piped watersheds in support of the calibration of hydrologic computer models used in citycounty drainage manual volume 2. County of san diego department of public works flood control.
Hydrology s tandards drainage manual december 1996 43 design storms overview a design storm statistically represents the variability of precipitation depth, and temporal and areal distribution occurring in nature. To enhance the quality of life for our diverse communities by developing and maintaining public infrastructure, and providing a variety of municipal services that complements our natural resources and environment. Sedimentation manual 2 march 2006 some sections of this manual were previously part of public works hydrology manual. To enhance the quality of life for our diverse communities by developing and maintaining public infrastructure, and providing a variety of municipal services.
Project sites from 010 acres in size should use the small area runoff hydrograph method, found in section j of the san bernardino county hydrology manual 1986. It provides a guide for policies and procedures based upon the science and data available to attain reasonable standardization of hydrology studies throughout the county. Garrett geological survey watersupply paper 1419 prepared in cooperation with. Division iauthority this policy paper has been prepared to provide a guide and establish the acceptable practices and criteria used in the design and c onstruction of storm dr ainage facilities within the city of san bernardino. Current, official soil survey information is on the web soil survey. San bernardino county flood control district, 2000, precipitation data for the san bernardino area. San bernardino county flood control district, 2000, precipitation data. The 2009 storm water quality control criteria 2009 swqccp for the county of san joaquin county is an update to the countys 2003 swqccp with special emphasis on the implementation on low impact development lid strategies. The primary goal is to provide 100year flood protection for all. Therefore, this manual is intended to be used for alameda county only. The san bernardino county hydrology manual 1986 provides reference to rainfall isopluvials for storm frequencies ranging from. Nrcs soil survey for san bernardino county, ca, mojave river area, v. Comparison of updated hydrology with 1994 hydrology study table 2 shows the comparison of the updated hydrology with 1994 study results. The amended ordinance is located under title 12, street improvement requirements of the codified ordinance of the county of imperial.
Hydrology and drainage study riverside, california. No efforts were made in this study to update the spfs. Highway drainage design manual volume 2 hydrology appendix b rainfall loss parameters january 2014 page. The 1993 county of san diego hydrology manual utilized a hypothetical type b. Hydrology, description of computer models, and evaluation. The preliminary study will determine the tributary area for drainage affecting the site and make an estimate for the quantity of water runoff for the 100 year event. The manual contains current standards and procedures, examples, runoff coefficient charts, and maps of rainfall isohyets and soil types. Riverside county stormwater quality design handbook. For these significant storms, deptharea reduction factors darf curves were developed and compared with the published curves developed and adapted by several flood. Hydrology, description of computer models, and evaluation of selected watermanagement alternatives in the san bernardino area, california. The mission of the water resources division is to be a reliable resource for floodplain management, flood warning information and hydrology expertise including technical support.
Report on the calibration analysis for the san diego county hydrology manual, may 2007 if you have trouble downloading the manual, please contact anthony barry at 8586942707. In general, 100year peak discharges increase from 11% at county line to % at. If you see a county storm drainage system in need of maintenance, contact the county department of public works field operations staff at 619 4431260 weekdays. The study is based on the hydrology manual of san bernardino county and the april 2010 addendum to the hydrology manual. Technical guidance document for water management plan. In cooperation with the san bernardino valley municipal water district. Under the latter term is included that general lowland area which is definitely limited on the north by the san gabriel and san bernardino ranges and on the east by the latter range and the san jacinto group, but whose southern boundary is irregular and difficult to define. San bernardino county hydrology manual, august 1986. Evaluation of doppler radar data for assessing deptharea.
The 1986 orange county hydrology manual and its 1996 addendum have been calibrated to local watershed conditions. The doppler radar derived rainfall data for over 150 candidate storms during 19972015 period, for the county of san bernardino, california, was assessed. The attached agreement is for the development of the new apple valley master plan of drainage and will allow work to commence as soon as the new. The san bernardino county hydrology manual does not include.
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