Big Stream Monitoring Set
Big Stream Monitoring Set Map
Synoptic markerSynoptic Investigative markerInvestigative Redflag markerRed Flag Biological markerBiological
Big Stream Monitoring Set Graphs
Select Water Quality Indicator

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.

Big Stream 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
Crystal Springs @ Crystal Springs Road CSCS 42.4885 -77.0478 10.86 SYNOPTIC
Chubb Creek @ 14A CC14A 42.5277 -77.0021 7.41 SYNOPTIC
Big Stream @ Dundee-Glenora Rd BSDG 42.5091 -76.9628 4.13 SYNOPTIC
Big Stream Mouth @ Glenora Point BSGP 42.49 -76.9143 0.18 SYNOPTIC
Upstream Dundee Wastewater Plant BSUW 42.5178 -76.9744 5.6 SYNOPTIC
Dundee WWTP Discharge BSWP 42.5167 -76.9703 5.5 SYNOPTIC
Dundee WWTP Pond Outfall BSWPP 42.5169 -76.9721 5.4 SYNOPTIC
Big Stream 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 June 07, 2021 BASE FLOW SYNOPTIC EVENT
2 March 15, 2021 BASE FLOW SYNOPTIC EVENT
3 October 05, 2020 BASE FLOW SYNOPTIC EVENT
4 August 05, 2020 BASE FLOW PARTIAL EVENT
5 July 12, 2020 STORMWATER PARTIAL EVENT
6 May 11, 2020 BASE FLOW SYNOPTIC EVENT
7 April 06, 2020 BASE FLOW PARTIAL EVENT
8 March 29, 2020 STORMWATER PARTIAL EVENT
9 September 09, 2019 BASE FLOW SYNOPTIC EVENT
10 July 06, 2019 STORMWATER SYNOPTIC EVENT
11 May 12, 2019 STORMWATER SYNOPTIC EVENT
12 April 01, 2019 BASE FLOW SYNOPTIC EVENT
13 October 22, 2018 BASE FLOW SYNOPTIC EVENT
14 August 14, 2018 STORMWATER SYNOPTIC EVENT
15 July 18, 2018 BASE FLOW SYNOPTIC EVENT
16 June 04, 2018 STORMWATER SYNOPTIC EVENT
17 April 23, 2018 BASE FLOW SYNOPTIC EVENT
18 October 30, 2017 STORMWATER SYNOPTIC EVENT
19 September 26, 2017 BASE FLOW SYNOPTIC EVENT
20 July 13, 2017 STORMWATER SYNOPTIC EVENT
21 July 10, 2017 BASE FLOW SYNOPTIC EVENT
22 April 05, 2017 BASE FLOW SYNOPTIC EVENT
23 October 31, 2016 BASE FLOW PARTIAL EVENT
24 October 21, 2016 STORMWATER SYNOPTIC EVENT
25 August 22, 2016 BASE FLOW SYNOPTIC EVENT
26 July 06, 2016 BASE FLOW SYNOPTIC EVENT
27 September 30, 2015 STORMWATER SYNOPTIC EVENT
28 August 17, 2015 BASE FLOW SYNOPTIC EVENT
29 July 13, 2015 BASE FLOW SYNOPTIC EVENT
30 June 09, 2015 STORMWATER PARTIAL EVENT
31 May 18, 2015 BASE FLOW SYNOPTIC EVENT
32 November 17, 2014 BASE FLOW SYNOPTIC EVENT
33 September 08, 2014 BASE FLOW SYNOPTIC EVENT
34 July 21, 2014 BASE FLOW SYNOPTIC EVENT
35 May 19, 2014 BASE FLOW SYNOPTIC EVENT