Canoga Creek Monitoring Set
Canoga Creek Monitoring Set Map
Synoptic Investigative Red Flag Biological
Canoga Creek Monitoring Set Graphs
Select Water Quality Indicator

Note: The points on this graph reflect the average levels or concentrations of each water quality parameter. To see the individual data points that make up these averages, please scroll down and select a Sampling Location or a Monitoring Event from the tables below.

Selection of water quality indicators is controlled by drop-down menu on the upper right. Graph presents average values for both SYNOPTIC LOCATIONS and REDFLAG LOCATIONS over all monitoring events (see below right, table of events). Synoptic and Red Flag locations are ordered downstream to upstream (left to right) according to their distance from the stream mouth (see below left, table of locations). If distance to mouth has not been determined, the location defaults to the right end of the graph. Graph distances do not correspond to actual miles to mouth. INVESTIGATIVE LOCATIONS and BIOLOGICAL LOCATIONS are excluded.

Separate averages are reported for samples collected under base flow and stormwater conditions. These stream flow categories are loosely defined. BASE FLOW corresponds to normal or low flow conditions. STORMWATER corresponds to elevated flows following rain or snow melt, as judged by online hydrographs of USGS gauging stations, if available, and/or as judged by volunteers based on their familiarity with the stream and their observation of factors such as stream turbulence and turbidity. Though loosely defined, these two flow categories provide a useful approximation of the impact of runoff on water quality. See metadata for a description of methods for estimating stream discharge and nutrient loading.

Canoga Creek Sampling Locations

This table lists all SYNOPTIC LOCATIONS , REDFLAG LOCATIONS , INVESTIGATIVE LOCATIONS , and BIOLOGICAL LOCATIONS in the watershed of the monitoring set, their latitude and longitude coordinates, and the number of river miles to the stream mouth, where applicable. Select a location to view a detailed site map and timeline of chemical and microbiological results.

Name Code Latitude Longitude Miles from the mouth Type
Canoga Creek North Branch CANB 42.8657 -76.7478 SYNOPTIC
Canoga Creek South Branch CASB 42.8627 -76.7492 SYNOPTIC
Canoga Spring CASP 42.8513 -76.7652 INVESTIGATIVE
Canoga Creek Monitoring Events

This table lists the dates of all chemical and microbiological monitoring events since the beginning of the monitoring set. A PARTIAL EVENT indicates that less than 90% of SYNOPTIC LOCATIONS were sampled. Select a date to navigate to a graph and table of raw chemical and microbiological data from the corresponding event.

Date Flow Type
1 November 15, 2021 STORMWATER SYNOPTIC EVENT
2 October 27, 2021 STORMWATER SYNOPTIC EVENT
3 September 27, 2021 BASE FLOW SYNOPTIC EVENT
4 May 01, 2020 STORMWATER SYNOPTIC EVENT
5 February 06, 2019 BASE FLOW SYNOPTIC EVENT
6 November 06, 2018 BASE FLOW SYNOPTIC EVENT
7 August 15, 2018 STORMWATER SYNOPTIC EVENT
8 May 16, 2018 BASE FLOW SYNOPTIC EVENT
9 March 27, 2018 BASE FLOW SYNOPTIC EVENT
10 October 12, 2017 BASE FLOW PARTIAL EVENT
11 March 27, 2017 STORMWATER SYNOPTIC EVENT
12 October 21, 2016 STORMWATER SYNOPTIC EVENT
13 April 12, 2016 STORMWATER SYNOPTIC EVENT
14 December 15, 2015 BASE FLOW SYNOPTIC EVENT
15 September 08, 2015 BASE FLOW SYNOPTIC EVENT