

Stream Monitoring.
Science-Based Methods
We use standard protocols backed by science to deliver reliable, defensible, and reproducible results.
Regulatory Compliance
Our work meets all state of Georgia and federal standards for environmental monitoring.
Quality Data
We provide accurate and consistent data to effectively support environmental decision making.
Experienced Team
Our team brings decades of combined field, lab, and data analysis experience with projects across the Southeastern US.

Stream Fish Assessment.
Gerrin Ecological Services is permitted for stream fish assessments in most Georgia watersheds. We closely follow the Georgia DNR standard operating procedures to ensure our clients get the best data possible.
OUR ASSESSMENTS INCLUDE:
Reconnaissance and physical measurements
Physical habitat assessments
In-situ water quality measurements
Index of biotic integrity calculations
Comprehensive report detailing findings
Macroinvertebrate Assessment.
The Gerrin Ecological Services team has over 15 years of combined experience with Georgia macroinvertebrate sampling and taxonomy.
OUR ASSESSMENTS INCLUDE:
Substrate particle (pebble) counts
Cross-sectional discharge measurements
Water quality sampling
Physical habitat assessments
Macroinvertebrate sorting and identification
Multi-metric index calculations
Comprehensive report detailing findings


Water Quality.
Gerrin Ecological Services can accommodate almost any water quality sampling project. From regulatory compliance sampling to pollutant source tracking, we design water quality studies to fit our client's needs.
EXAMPLES OF SERVICES:
Bacteria and E. coli
Nutrients and metals
In-situ water quality measurements
Microbial or pollutant source tracking
Comprehensive report detailing findings
.png)