Iowa DNR
Iowa DNR
ADBNet
Water Quality Assessments
Impaired Waters List

Princeton State Wildlife Area IA 01-WPS-331

Scott County S26T80NR5E north of Princeton IA.

Cycle
2022
Release Status
Final
Overall IR
3 - Insufficient data exist to determine whether any designated uses are met.
Trend
Unknown
Created
1/6/2022 3:13:45 PM
Updated
1/31/2022 8:36:08 AM
Use Support
Class BLW
Aquatic Life - Lakes and wetlands
WINOFI
Impairment Code
3b - Use potentially impaired based on an evaluated assessment.
Cause Magnitude
Moderate
Status
Continuing
Source
Hydromodification
Source Confidence
Moderate
Cycle Added
2000
Impairment Rationale
Adverse impacts on plant/animal communities
Data Source
Biological monitoring: Iowa DNR Wildlife
Impairment Code
3b - Use potentially impaired based on an evaluated assessment.
Cause Magnitude
High
Status
Continuing
Source
Agriculture
Source Confidence
Moderate
Cycle Added
2018
Impairment Rationale
Adverse impacts on plant/animal communities
Data Source
Ambient monitoring: Iowa DNR-shallow lakes & wetlands
Impairment Delistings
No delistings for this assessment cycle.
Documentation
Assessment Summary

The Class BLW use was assessed (evaluated) as "WINOFI" due to high levels of algae at this shallow lake/wetland also suggest impairment due to aesthetically objectionable conditions and due to siltation related to annual flooding by the Mississippi River. All other designated uses were “not assessed.” Note: This waterbody is not in Iowa's current surface water classification and is thus classified only for general uses. As such, only the general use protection for aquatic life will be assessed.

Assessment Explanation

Sources of Data:

Data Source

Data Source ID

Data Type

Data Age

Site ID

Site Name

Site Description

Iowa DNR

6

WQ

CY 2014-2016

23000029

Wetland 34

Princeton State Wildlife Area (Wetland 34)

Class BLW - Wetland TSI's

Site ID

Data Source ID

Parameter Name

# Samples / # Years

Minimum Value

Maximum Value

Median Value

Median TSI Violation

Assessment Type

Support Level

23000029

6

Chlorophyll a TSI

7 / 3

41

78

70

YES

Evaluated

WINOFI

23000029

6

Total Phosphorus TSI

7 / 3

70

99

87

NA

NA

NA

23000029

6

Inorganic suspended solids

2 / 1

2

7

5

NA

NA

NA

Class BLW - Conventional Parameters:

Site ID

Data Source ID

Parameter Name

# Samples / # Years

Maximum Value

Mean Value

Median Value

# Acute / Chronic Violations

% Acute/ Chronic Violations

Significantly >10% Violations

Assessment Type

Support Level

23000029

6

Ammonia

6 / 3

0.02845

0.02

0.02

0 / 0

0% / 0%

NO

Evaluated

Full

23000029

6

Dissolved oxygen

7 / 3

15

8.72

8.1

NA / 0

NA / 0%

NO

Evaluated

Full

23000029

6

pH

6 / 3

11.4

9.2

9.46

4 / NA

67% / NA

YES

Evaluated

Not

23000029

6

Temperature

7 / 3

29.5

25.5

25.7

0 / 0

0% / 0%

NO

Evaluated

Full

Class BLW - Protection of Submerged Aquatic Vegetation:

Site ID

Data Source ID

Parameter Name

# Samples / # Years

Minimum Value

Maximum Value

Median Value

Median Value >= SAV

Assessment Type

Support Level

23000029

6

Total suspended solids

7 / 3

3.28

34

21.5

NO

Evaluated

Full

Class BLW - Toxic Parameters:

Site ID

Data Source ID

Parameter Name

# Samples / # Years

Maximum Value

Mean Value

Median Value

# Acute / Chronic Violations

% Acute/ Chronic Violations

>1 Acute / Chronic Violation

Assessment Type

Support Level

23000029

6

Parathion

1 / 1

0.05

0.05

0.05

0 / 0

0% / 0%

NO

Evaluated

Full

23000029

6

Pentachlorophenol

3 / 3

0.1

0.1

0.1

0 / 0

0% / 0%

NO

Evaluated

Full

Class HH - No Data

Monitoring and Methods
Assessment Key Dates
6/2/2014
Fixed Monitoring Start Date
8/17/2016
Fixed Monitoring End Date
Methods
120
Surveys of fish and game biologists/other professionals
222
Non-fixed-station monitoring (conventional during key seasons and flows)