Princeton State Wildlife Area IA 01-WPS-331

Scott County S26T80NR5E north of Princeton IA.

Open Data Collection Period Modal

For purposes of developing stream/river water quality assessments for integrated reporting, three years of water quality data are typically used for both conventional pollutant parameters (e.g., indicator bacteria) and the less frequently monitored toxic parameters (e.g., toxic metals). Since the 2004 IR cycle, DNR has used a three-year data gathering period for streams, rivers, and beaches. For most assessments, the use of three years of data increases the number of samples upon which the decision on use support is based and helps address the problem of weather-related year-to-year fluctuations in water quality.

Due to the lower sampling frequency in Iowa’s ambient lake, biological, fish kill, and fish tissue monitoring programs, five years of data are used for developing IR assessments and for identifying Section 303(d) listings.

Data Type	Data Timeframe
Beach Sampling Data	CY 2020 - 2022
Stream/River Water Quality Data	CY 2020 - 2022
Lake Water Quality Data	CY 2018 - 2022
Biological Sampling Data	CY 2018 - 2022*
Fish Kill Data	CY 2018 - 2022
Fish Tissue Sampling Data	CY 2018 - 2022
Continuous Dissolved Oxygen Sampling Data	CY 2018 - 2022
*Biological sites sampled in both 2017 and 2021 were also assessed.

Open Segment Map
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Cycle: 2024
Release Status: Final
Overall IR: 3 - Insufficient data exist to determine whether any designated uses are met.
Trend: Unknown
Created: 11/1/2023 8:13:52 AM
Updated: 2/5/2024 9:28:04 AM

Use Support

Class BLW

Aquatic Life - Lakes and wetlands

WINOFI

Sedimentation/Siltation

Support Level

Further Investigation Needed

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

Algal Growth: Chlorophyll a

Support Level

Further Investigation Needed

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

Support Level

Further Investigation Needed

Impairment Code

3b - Use potentially impaired based on an evaluated assessment.

Cause Magnitude

Slight

Status

New

Source

Unknown: Source Unknown

Source Confidence

N/A

Cycle Added

2024

Impairment Rationale

Potential Impairment

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. Additionally, Class BLW use was assessed (evaluated) as "WINOFI" based on results of the Class BLW criterion for pH. 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 - Binomial 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	WINOFI
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

Monitoring Start

8/17/2016

Monitoring End

Methods

120

Surveys of fish and game biologists/other professionals

200

Physical/Chemical Monitoring