Parowan Pond Community Fishery Dredging and Inflow Structure Upgrade
Project ID: 5732
Status: Completed
Fiscal Year: 2022
Submitted By: 521
Project Manager: Nic Braithwaite
PM Agency: Utah Division of Wildlife Resources
PM Office: Southern Region
Lead: Parowan City
WRI Region: Southern
Description:
The project would improve the recreational fishery at Parowan Pond by dredging the large amount of sediment that has been deposited in recent years and reduce the need for future maintenance by updating the inflow structure to limit sediment from entering the pond in the first place.
Location:
The project is located at approximately 450 W 100 N Parowan, UT.
Project Need
Need For Project:
Parowan Pond is a popular community fishery in the small town of Parowan, UT, but it is currently limited by a recent influx of sediment that has reduced the volume of the pond and quality of the fishery. The current state is the result of a poor inflow structure that did not limit or bypass high sediment loads from entering the pond, an issue that was made even worse by the flashy flood events following the Brian Head Fire. The sediment needs to be dredged/removed to regain the full water storage potential of the pond and, subsequently, the full capacity of the fishery. The inflow structure has recently been updated to reduce the sediment supply and minimize future maintenance needs.
Objectives:
This project has two main goals with corresponding objectives: Goal 1 - Regain the full capacity of the pond that has been lost in recent years through sediment deposition. Objective - Dredge and remove at least 100 cubic yards of material from around the entire pond. Goal 2 - Minimize future sediment deposition in the pond. Objective - A new inflow structure has been installed that is able to bypass high flow events carrying large amounts of sediment (e.g., extreme monsoon storm).
Project Location/Timing Justification (Why Here? Why Now?):
There is not a typical threat to the ecological importance of Parowan Pond because it is an artificial water, small in size, and located in an relatively urban setting that is largely unconnected from surrounding habitat and wildlife. However, the fishery in Parowan Pond is important to the angling public and if the capacity is not regained and the pond continues to fill with sediment, the fishery will continue to diminish and may become unable to support a fishery at all. The lower volume of water reduces the total biomass of fish that can be supported and exacerbates habitat issues, especially as related to temperature and oxygen.
Relation To Management Plan:
The project meets general Utah Division of Wildlife Resources (UDWR) Goals and Objectives to increase fish populations and expand quality fishing opportunities.
Fire / Fuels:
Not applicable.
Water Quality/Quantity:
The project could help to dampen high temperatures, increase oxygen, and reduce nutrient loading that would lead to eutrophication.
Compliance:
Parowan City will ensure any necessary permits/approval/etc. are secured.
Methods:
The UDWR will rent a special "long reach" excavator and Parowan City will provide a standard excavator, loaders, dump trucks needed to dredge the pond and install the new inflow structure (Parowan City will also purchase the new inflow structure materials). Parowan City employees will operate the equipment and do the on-the-ground work, likely in the fall of 2021.
Monitoring:
Periodic site visits will be made to ensure the pond and fishery are functioning. Parowan City will operate and maintain the new inflow structure.
Partners:
Parowan City
Future Management:
The new inflow structure should minimize the future maintenance that is needed (e.g., additional dredging should be needed in decades, not just a few years).
Sustainable Uses of Natural Resources:
Not applicable. The fishery at Parowan Pond is essentially maintained through stocking.
Budget WRI/DWR Other Budget Total In-Kind Grand Total
$10,250.00 $0.00 $10,250.00 $30,000.00 $40,250.00
Item Description WRI Other In-Kind Year
Materials and Supplies Miscellaneous cost such as fuel and landfill fees. $2,250.00 $0.00 $0.00 2022
Equipment Rental/Use Use of Parowan City excavator, loaders, and dump trucks. $0.00 $0.00 $15,000.00 2022
Materials and Supplies New inflow structure materials $0.00 $0.00 $750.00 2021
Equipment Rental/Use Rental of long reach excavator for one month. $8,000.00 $0.00 $0.00 2022
Personal Services (permanent employee) Parowan City employees operating the equipment needed to dredge the pond. $0.00 $0.00 $10,000.00 2022
Personal Services (permanent employee) UDWR employee time spent advising on the project and securing rental of the long reach excavator . $0.00 $0.00 $2,500.00 2022
Personal Services (permanent employee) Parowan City employees installing the new inflow structure. $0.00 $0.00 $1,750.00 2021
Funding WRI/DWR Other Funding Total In-Kind Grand Total
$10,250.00 $0.00 $10,250.00 $30,088.10 $40,338.10
Source Phase Description Amount Other In-Kind Year
Parowan City Parowan City will provide a standard excavator, loaders, dump trucks, equipment operators. $0.00 $0.00 $25,000.00 2022
Utah Division of Wildlife Resources (UDWR) UDWR employee time spent securing rental of the long reach excavator and advising on the project. $0.00 $0.00 $2,500.00 2022
Habitat Council Account QHCR Rental of the long reach excavator and miscellaneous costs associated with fuel and landfill. $10,250.00 $0.00 $0.00 2022
Parowan City Parowan City provided the materials and labor to install new inflow structure. $0.00 $0.00 $2,500.00 2021
DWR-WRI Project Admin In-Kind $0.00 $0.00 $88.10 2022
Species
Species "N" Rank HIG/F Rank
Bluegill R3
Threat Impact
Not Listed NA
Channel Catfish R4
Threat Impact
Not Listed NA
Rainbow Trout R5
Threat Impact
Not Listed NA
Habitats
Habitat
Open Water
Threat Impact
Sediment Transport Imbalance Medium
Open Water
Threat Impact
Temperature Extremes Unknown
Project Comments
Comment 08/31/2022 Type: 2 Commenter: Alison Whittaker
Thank you for submitting your completion report on time. Don't forget to upload any pictures of the project you have of before, during and after completion.
Completion
Start Date:
05/01/2022
End Date:
06/30/2022
FY Implemented:
2022
Final Methods:
The UDWR rented a special "long reach" excavator and Parowan City provided a standard excavator, loaders, dump trucks needed to dredge the pond and install the new inflow structure (Parowan City will also purchase the new inflow structure materials). Parowan City employees operated the equipment did all the on-the-ground work.
Project Narrative:
This was a relatively simple project and was implemented as planned without any significant issues. The majority of work was completed in the spring and early summer of 2022.
Future Management:
The new inflow structure will be maintained by Parowan City and should prevent large amounts of sediment being discharged into the pond, which should make it unnecessary to do any additional dredging in the next 10-20 years.
Map Features
ID Feature Category Action Treatement/Type
2281 Water development point feature Modification Water Control Structure
10158 Aquatic/Riparian Treatment Area Lake/Wetland/Pond Improvements Dredging
Project Map
Project Map