Riverwatch Data collected in the
Boulder Creek Watershed
by Boulder Area Schools
Boulder Creek at 4 Mile Creek

Select here for Boulder Creek at 4 Mile Creek metals data

Collection Date Dissolved Cadmium Total Cadmium Dissolved Copper Total Copper Dissolved Iron Total Iron Dissolved Manganese Total Manganese Dissolved Lead Total Lead Dissolved Zinc Total Zinc
- µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l µg/l
12/7/91 0.00 0.00 2.9 2.5 0.0 0.0 0.0 0.0 0.0 0.0 11.0 0.0
12/28/91 0.00 0.00 1.6 1.9 0.0 0.0 11.0 0.0 0.0 0.0   0.0
1/16/92 0.00 0.00 1.4 2.8 0.0 0.0 0.0 0.0 0.0 0.0 12.0 0.0
2/10/92 0.00 0.00 1.5 1.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3/2/92 0.00 0.00 1.0 1.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3/18/92 0.00 0.00 1.3 1.5 0.0 233.0 0.0 10.0 0.0 0.0 20.0 16.0
4/7/92 0.00 0.00 2.5 3.2 111.0 624.0 0.0 25.0 0.0 0.0 25.0 34.0
4/13/92   0.00   3.4   867.0   33.0   0.0   28.0
4/20/92 0.00 0.00 3.1 2.9 206.0 704.0 13.0 25.0 0.0 0.0 33.0 21.0
4/27/92 0.00 0.00 2.2 2.8 0.0 304.0 10.0 18.0 0.0 0.0 20.0 18.0
5/5/92 0.00 0.00 1.6 2.4 136.0 1162.0 0.0 55.0 0.0 0.0 0.0 19.0
5/11/92 0.00 0.00 2.1 1.5 129.0 412.0 8.0 20.0 0.0 0.0   9.0
5/18/92 0.00 0.00 2.3 2.3 153.0 330.0 0.0 15.0 0.0 0.0 0.0 0.0
5/25/92 0.00 0.00 0.0 1.1 109.0 364.0 11.0 14.0 0.0 0.0 0.0 0.0
6/8/92 0.00 0.00 2.7 7.5 107.0 432.0 0.0 10.0 0.0 0.0 0.0 0.0
6/15/92 0.00 0.00 5.1 2.8 0.0 310.0 0.0 0.0 0.0 0.0 12.0 10.0
6/22/92 0.00 0.00 1.2 1.9 376.0 522.0 10.0 16.0 0.0 0.0 0.0 0.0
6/29/92 0.00 0.00 0.0 1.2 0.0 386.0 0.0 12.0 0.0 0.0 11.0 0.0
7/15/92 0.00 0.00 0.0 0.0 0.0 203.0 0.0 0.0 0.0 0.0 13.0 0.0
7/20/92 0.00 0.00 0.0 0.0 0.0 370.0 0.0 12.0 0.0 0.0 0.0 0.0
8/1/92   0.00   0.0   108.0   0.0   0.0   0.0
8/10/92   0.00   0.0   0.0   0.0   0.0   0.0
8/31/92   0.00   0.0   153.0   0.0   0.0   0.0
9/14/92   0.00   0.0   159.0   0.0   0.0   0.0
10/19/92   0.00   1.4   180.0   0.0   0.0   0.0
11/9/92   0.00   0.0   0.0   0.0   0.0   0.0
12/7/92   0.00   0.0   234.0   0.0   0.0   0.0
1/11/93   0.00   1.9   329.0   0.0   0.0   0.0
2/9/93   0.00   1.5   117.0   0.0   0.0   0.0
3/1/93   0.00   3.2   243.0   15.0   0.0   0.0
3/15/93   0.17   3.6   184.0   0.0   0.0   44.0
4/5/93   0.00   0.0   494.0   0.0   0.0   0.0
4/12/93   0.00   2.5   212.0   0.0   0.0   0.0
4/19/93   0.00   2.3   793.0   27.0   0.0   23.0
5/3/93   0.00   2.2   351.0   16.0   0.0   0.0
5/10/93   0.00   2.3   296.0   21.0   0.0   0.0
5/17/93   0.00   2.5   644.0   24.0   0.0   0.0
5/24/93   0.00   3.3   564.0   20.0   0.0   17.0
6/7/93   0.00   2.2   320.0   0.0   0.0   0.0
6/15/93   0.00   2.2   351.0   11.0   0.0   0.0
6/21/93   0.00   1.7   425.0   19.0   0.0   0.0
6/28/93   0.00   1.5   297.0   13.0   0.0   0.0
7/13/93   0.00   0.0   254.0   18.0   0.0   0.0
7/19/93   0.00   0.0   204.0   16.0   0.0   0.0
7/24/93   0.00   0.0   196.0   0.0   0.0   0.0
8/9/93   0.00   0.0   168.0   14.0   0.0   0.0
8/23/93                        
9/13/93   0.00   0.0   393.0   22.0   0.0   0.0
10/8/93   0.00   0.0   101.0   11.0   0.0   12.0
11/8/93   0.00   0.0   0.0   24.0   0.0   0.0
12/13/93   0.00   0.0   0.0   21.0   0.0   13.0
1/10/94   0.00   0.0   0.0   25.0   0.0   11.0
2/7/94   0.00   0.0   0.0   0.0   0.0   14.0
3/6/94   0.00   1.3   0.0   0.0   0.0   31.0
3/28/94   0.00   1.7   437.0   18.0   0.0   11.0
4/11/94   0.21   5.2   122.0   0.0   0.0   13.0
4/18/94   0.25   6.0   327.0   0.0   0.0   35.0
4/25/94   0.00   2.6   677.0   33.0   1.1   31.0
5/2/94   0.26   5.2   125.0   0.0   1.4   14.0
5/9/94   0.00   2.1   642.0   52.0   0.0   11.0
5/16/94   0.00   2.1   538.0   19.0   0.0   11.0
5/23/94   0.00   1.2   278.0   19.0   0.0   0.0
6/6/94   0.00   1.6   417.0   24.0   0.0   0.0
6/15/94   0.00   0.0   281.0   24.0   0.0   0.0
6/20/94   0.00   0.0   299.0   31.0   0.0   0.0
6/28/94   0.00   1.3   245.0   21.0   0.0   0.0
7/6/94   0.00   0.0   228.0   0.0   0.0   0.0
7/25/94   0.00   0.0   200.0   0.0   0.0   0.0
8/11/94   0.00   0.0   162.0   0.0   0.0   0.0
8/25/94   0.00   0.0   125.0   0.0   0.0   0.0
9/12/94   0.00   0.0   202.0   0.0   0.0   0.0
10/10/94   0.00   0.0   261.0   0.0   0.0   0.0
5/14/95   0.00   3.1   551.0   37.0   0.0   26.0
12/6/95   0.00   0.0   0.0   0.0   0.0   0.0
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