Tetes Des Morts Creek IA 01-TRK-121
mouth (Dubuque Co.) to confluence with Lux Cr. in S7 T87N R4E Jackson Co.
- Cycle
- 2020
- Release Status
- Final
- Overall IR
- 5 - Water is impaired or threatened and a TMDL is needed.
- Trend
- Unknown
- Created
- 8/14/2020 9:23:04 AM
- Updated
- 1/29/2021 9:44:30 AM
The presumptive Class A1 and the Class A2 uses remain assessed as “not supported” due to violations of Iowa water quality criteria for indicator bacteria (E. coli). The Class BWW1 use remains assessed as "partially supported" based on biological sampling data. The Class HH use remains assessed as "fully supported" based on fish tissue sampling data.
Sources of Data: Data Source Data Source ID Data Type Data Age Site ID Site Name Site Description Iowa DNR 6 WQ CY 2010-2011 12490004 Tete des Morts at Hwy 52 Site 2 Iowa DNR 6 WQ CY 2010-2011 13490002 Tete des Morts at High Bridge Road Site 3 Iowa DNR 6 BIO See Below 231 Tetes des Morts Creek At St Donatus (original bio site) Iowa DNR 6 FT See Below 358 Tetes des Morts Creek At St Donatus Presumptive Class A1 -
Indicator Bacteria: Historical Site
ID Data
Source ID #
Samples / # Years 2010
Geometric Mean 2011
Geometric Mean Annual
Geometric Mean Violation #
Violations %
Violations Significantly
>10% Violations Assessment
Type Support
Level 12490004 6 24
/ 2 1578 822 Yes 20 83% Yes Evaluated Not 13490002 6 21
/ 2 713 106 Yes 8 37% Yes Evaluated Partial Class A2 -
Indicator Bacteria: Historical Site
ID Data
Source ID #
Samples / # Years 2010
Geometric Mean 2011
Geometric Mean Annual
Geometric Mean Violation #
Violations %
Violations Significantly
>10% Violations Assessment
Type Support
Level 12490004 6 24
/ 2 1578 822 Yes 5 21% Yes Evaluated Not 13490002 6 21
/ 2 713 106 Yes 2 10% No Evaluated Partial Class BWW1 - Biological
Sampling: Benthic Macroinvertebrates: BioNet
Site ID Date Drainage
Area (mi2) Ecoregion Major
Drainage/ Thermal BM
Sample Gear BMIBI
score BMIBI
Class 52b
BMIBI BIT BMIBI
Pass/ Fail 231 7/23/18 40 52b MS/WW Hess 56 Good 61 Fail 231 9/25/17 40 52b MS/WW Hess 54 Fair 61 Fail 231 9/13/16 40 52b MS/WW Hess 66 Good 61 Pass 231 8/20/14 40 52b MS/WW Hess 54 Fair 61 Fail Fish: BioNet
Site ID Date Drainage
Area (mi2) Ecoregion Major
Drainage/ Thermal Riffle
Stream? FIBI
score FIBI
Class 52b
FIBI BIT FIBI
Pass/ Fail 231 9/25/17 40 52b MS/WW NA 69 Good 52 Pass 231 9/14/16 40 52b MS/WW NA 67 Good 52 Pass 231 8/20/14 40 52b MS/WW NA 74 Excellent 52 Pass Overall: Community Assessment
Type Assessment
Result Support
Level Earned
IR Category Actual
IR Category Reason Benthic Macroinvertebrates Monitored Fail
(1/4) Partial Fish Monitored Pass
(3/3) Full Overall Monitored Fail Partial 5bv 5bv Assessment is monitored because
there were two or more samples collected in the last five years. Class
HH – Fish Tissue Sampling: Site ID Date Species Name Biopart # in sample Hg result Hg violation? Assessment Type Support Level 358 9/14/16 smallmouth bass plug 3 0.143 No Evaluated Full