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Kearney Outdoor Learning Area (KOLA) Calibration Files for Image-based Water Level Analysis in GRIME2 Software
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| Type: | Resource | |
| Storage: | The size of this resource is 22.6 KB | |
| Created: | Sep 09, 2025 at 12:46 p.m. (UTC) | |
| Last updated: | Jan 16, 2026 at 1:45 a.m. (UTC) | |
| Citation: | See how to cite this resource | |
| Content types: | Single File Content |
| Sharing Status: | Public |
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Abstract
Water level is one of the most fundamental measurements for monitoring, using and managing water resources. Lake, stream and canal water levels are important for wildlife habitat, recreation, agricultural production and municipal and industrial water use. This study advances the use of trail (game) cameras for water level monitoring by integrating an octagon calibration target with open-source GRIME2 software. This integrated system, including a specialized target background (“stop sign”) installed in the water, enhances reliability and ease of use, delivering consistent and accurate measurements over many months. Maintenance issues, including cleaning the sign to remove biofouling, detecting the presence of ice or snow, and identifying when shadows or other lighting issues impact measurements, are key to successful monitoring. After accounting for these issues, 90% of GRIME2 measurements were within 3 cm (0.1 feet) of traditional pressure transducer measurements over a 26-month period (52,570 images). Importantly, the new system automatically adapts to inevitable shifts in the field of view that occur with ground-based time-lapse cameras.
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| This resource is referenced by | Gilmore, T. E. (2025). Kearney Outdoor Learning Area (KOLA) Water Levels from Sensor, Staff Gauge, and GRIME2 Image-based Water Level Software, HydroShare, http://www.hydroshare.org/resource/a152931d41c44de2935cc02ced44a5c2, accessed on: 09/08/2025 |
| This resource is referenced by | Gilmore, T. E. (2025). Kearney Outdoor Learning Area (KOLA) Noon and Midnight Imagery for Water Level Analysis in GRIME2 Software, HydroShare, http://www.hydroshare.org/resource/f04d7a7260d6482e86b195c19eb8853c, accessed on: 09/09/2025 |
| Title | Owners | Sharing Status | My Permission |
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| Kearney Outdoor Learning Area (KOLA) Data | Troy Gilmore · Mary Harner | Public & Shareable | Open Access |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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