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Water Quality Samples for California

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! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.

USGS 11092450 LOS ANGELES R A SEPULVEDA DAM CA

Los Angeles County, California
Hydrologic Unit Code 18070105
Latitude  34°09'42", Longitude 118°27'57" NAD27
Drainage area 158  square miles
Gage datum 655.13 feet above NAVD88
Period of record
Begin Date End Date Samples
2021-03-02 2023-11-18 27
Select one or more parameter codes from the list.
When you are finished selecting parameter codes, set your output format using the available options below.
Parameter
Code
Count Begin
Date
End
Date
Parameter Code Complete Name
00003 2 2021-03-02 2023-11-18 Sampling depth, feet
00004 24 2021-03-02 2023-11-18 Stream width, feet
00009 2 2021-03-02 2023-11-18 Location in cross section, distance from left bank looking downstream, feet
00010 2 2021-03-02 2023-11-18 Temperature, water, degrees Celsius
00020 1 2021-03-02 2023-11-18 Temperature, air, degrees Celsius
00025 1 2021-03-02 2023-11-18 Barometric pressure, millimeters of mercury
00032 1 2021-03-02 2023-11-18 Cloud cover, percent
00041 1 2021-03-02 2023-11-18 Weather, World Meteorological Organization (WMO) code
00061 13 2021-03-02 2023-11-18 Discharge, instantaneous, cubic feet per second
00063 27 2021-03-02 2023-11-18 Number of sampling points, count
00064 14 2021-03-02 2023-11-18 Mean depth of stream, feet
00065 13 2021-03-02 2023-11-18 Gage height, feet
00095 1 2021-03-02 2023-11-18 Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
00191 1 2021-03-02 2023-11-18 Hydrogen ion, water, unfiltered, calculated, milligrams per liter
00300 1 2021-03-02 2023-11-18 Dissolved oxygen, water, unfiltered, milligrams per liter
00301 1 2021-03-02 2023-11-18 Dissolved oxygen, water, unfiltered, percent of saturation
00400 1 2021-03-02 2023-11-18 pH, water, unfiltered, field, standard units
00403 1 2021-03-02 2023-11-18 pH, water, unfiltered, laboratory, standard units
00405 1 2021-03-02 2023-11-18 Carbon dioxide, water, unfiltered, milligrams per liter
00452 1 2021-03-02 2023-11-18 Carbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter
00453 1 2021-03-02 2023-11-18 Bicarbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter
00602 1 2021-03-02 2023-11-18 Total nitrogen [nitrate + nitrite + ammonia + organic-N], water, filtered, milligrams per liter
00607 1 2021-03-02 2023-11-18 Organic nitrogen, water, filtered, milligrams per liter as nitrogen
00608 1 2021-03-02 2023-11-18 Ammonia (NH3 + NH4+), water, filtered, milligrams per liter as nitrogen
00613 1 2021-03-02 2023-11-18 Nitrite, water, filtered, milligrams per liter as nitrogen
00618 1 2021-03-02 2023-11-18 Nitrate, water, filtered, milligrams per liter as nitrogen
00623 1 2021-03-02 2023-11-18 Ammonia plus organic nitrogen, water, filtered, milligrams per liter as nitrogen
00631 1 2021-03-02 2023-11-18 Nitrate plus nitrite, water, filtered, milligrams per liter as nitrogen
00660 1 2021-03-02 2023-11-18 Orthophosphate, water, filtered, milligrams per liter as PO4
00666 1 2021-03-02 2023-11-18 Phosphorus, water, filtered, milligrams per liter as phosphorus
00671 1 2021-03-02 2023-11-18 Orthophosphate, water, filtered, milligrams per liter as phosphorus
00680 1 2021-03-02 2023-11-18 Organic carbon, water, unfiltered, milligrams per liter
00681 1 2021-03-02 2023-11-18 Organic carbon, water, filtered, milligrams per liter
00900 1 2021-03-02 2023-11-18 Hardness, water, milligrams per liter as calcium carbonate
00904 1 2021-03-02 2023-11-18 Noncarbonate hardness, water, filtered, field, milligrams per liter as calcium carbonate
00905 1 2021-03-02 2023-11-18 Noncarbonate hardness, water, filtered, lab, milligrams per liter as calcium carbonate
00915 1 2021-03-02 2023-11-18 Calcium, water, filtered, milligrams per liter
00925 1 2021-03-02 2023-11-18 Magnesium, water, filtered, milligrams per liter
00930 1 2021-03-02 2023-11-18 Sodium, water, filtered, milligrams per liter
00931 1 2021-03-02 2023-11-18 Sodium adsorption ratio (SAR), water, number
00932 1 2021-03-02 2023-11-18 Sodium fraction of cations, water, percent in equivalents of major cations
00935 1 2021-03-02 2023-11-18 Potassium, water, filtered, milligrams per liter
00940 1 2021-03-02 2023-11-18 Chloride, water, filtered, milligrams per liter
00945 1 2021-03-02 2023-11-18 Sulfate, water, filtered, milligrams per liter
00950 1 2021-03-02 2023-11-18 Fluoride, water, filtered, milligrams per liter
00955 1 2021-03-02 2023-11-18 Silica, water, filtered, milligrams per liter as SiO2
01000 1 2021-03-02 2023-11-18 Arsenic, water, filtered, micrograms per liter
01005 1 2021-03-02 2023-11-18 Barium, water, filtered, micrograms per liter
01020 1 2021-03-02 2023-11-18 Boron, water, filtered, micrograms per liter
01025 1 2021-03-02 2023-11-18 Cadmium, water, filtered, micrograms per liter
01030 1 2021-03-02 2023-11-18 Chromium, water, filtered, micrograms per liter
01046 1 2021-03-02 2023-11-18 Iron, water, filtered, micrograms per liter
01049 1 2021-03-02 2023-11-18 Lead, water, filtered, micrograms per liter
01056 1 2021-03-02 2023-11-18 Manganese, water, filtered, micrograms per liter
01080 1 2021-03-02 2023-11-18 Strontium, water, filtered, micrograms per liter
01085 1 2021-03-02 2023-11-18 Vanadium, water, filtered, micrograms per liter
01095 1 2021-03-02 2023-11-18 Antimony, water, filtered, micrograms per liter
01106 1 2021-03-02 2023-11-18 Aluminum, water, filtered, micrograms per liter
01130 1 2021-03-02 2023-11-18 Lithium, water, filtered, micrograms per liter
01300 1 2021-03-02 2023-11-18 Oil and grease, severity, code
01305 1 2021-03-02 2023-11-18 Suds or foam, severity, code
01320 1 2021-03-02 2023-11-18 Floating garbage, severity, code
01325 1 2021-03-02 2023-11-18 Floating algae mats, severity, code
01330 1 2021-03-02 2023-11-18 Odor, atmospheric, severity, code
01340 1 2021-03-02 2023-11-18 Dead fish, severity, code
01345 1 2021-03-02 2023-11-18 Floating debris, severity, code
01350 1 2021-03-02 2023-11-18 Turbidity, severity, code
22703 1 2021-03-02 2023-11-18 Uranium (natural), water, filtered, micrograms per liter
29801 1 2021-03-02 2023-11-18 Alkalinity, water, filtered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate
30207 13 2021-03-02 2023-11-18 Gage height, above datum, meters
30209 13 2021-03-02 2023-11-18 Discharge, instantaneous, cubic meters per second
39086 1 2021-03-02 2023-11-18 Alkalinity, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate
63676 1 2021-03-02 2023-11-18 Turbidity, water, unfiltered, broad band light source (400-680 nm), detectors at multiple angles including 90 +-30 degrees, ratiometric correction, NTRU
70300 1 2021-03-02 2023-11-18 Dissolved solids dried at 180 degrees Celsius, water, filtered, milligrams per liter
70301 1 2021-03-02 2023-11-18 Dissolved solids, water, filtered, sum of constituents, milligrams per liter
70303 1 2021-03-02 2023-11-18 Dissolved solids, water, filtered, short tons per acre-foot
70331 17 2021-03-02 2023-11-18 Suspended sediment, sieve diameter, percent smaller than 0.0625 millimeters
71846 1 2021-03-02 2023-11-18 Ammonia (NH3 + NH4+), water, filtered, milligrams per liter as NH4
71851 1 2021-03-02 2023-11-18 Nitrate, water, filtered, milligrams per liter as nitrate
71856 1 2021-03-02 2023-11-18 Nitrite, water, filtered, milligrams per liter as nitrite
71865 1 2021-03-02 2023-11-18 Iodide, water, filtered, milligrams per liter
71870 1 2021-03-02 2023-11-18 Bromide, water, filtered, milligrams per liter
71999 27 2021-03-02 2023-11-18 Sample purpose, code
72219 9 2021-03-02 2023-11-18 Sampler nozzle material, code
72220 8 2021-03-02 2023-11-18 Sampler nozzle diameter, code
80154 17 2021-03-02 2023-11-18 Suspended sediment concentration, milligrams per liter
80155 10 2021-03-02 2023-11-18 Suspended sediment discharge, short tons per day
82073 2 2021-03-02 2023-11-18 Starting time, 24 hour clock, hour-minute (hhmm)
82074 2 2021-03-02 2023-11-18 Ending time, 24 hour clock, hour-minute (hhmm)
82398 27 2021-03-02 2023-11-18 Sampling method, code
84164 24 2021-03-02 2023-11-18 Sampler type, code
84182 1 2021-03-02 2023-11-18 Bottle or bag sampler material (construction), code
90095 1 2021-03-02 2023-11-18 Specific conductance, water, unfiltered, laboratory, microsiemens per centimeter at 25 degrees Celsius
91157 14 2021-03-02 2023-11-18 Suspended sediment, sediment mass recovered from whole water sample, dry weight, grams
91158 5 2021-03-02 2023-11-18 Suspended sediment, smaller than 0.063 mm sieve diameter, sediment mass recovered from whole water sample, dry weight, grams
91159 5 2021-03-02 2023-11-18 Suspended sediment, larger than 0.063 mm sieve diameter, sediment mass recovered from whole water sample, dry weight, grams
99206 1 2021-03-02 2023-11-18 NWIS lot number, capsule filter, 0.45 micron
 
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