Hydrologic Connectivity: Quantitative Assessments of Hydrologic-Enforced Drainage Structures in an Elevation Model

Poppenga, Sandra K.; Worstell, Bruce B.

doi:10.2112/si76-009

Cited by 10 publications

(24 citation statements)

References 30 publications

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“…Regardless of the technique, notice that both Figures 3 and 4 show that road elevations overlaying drainage structures prevent hydrologic connectivity from inland areas to ocean waters. In the lidar elevation surface, these types of elevated (road) features can be identified and hydrologicallyenforced [9,10,12,13] to consider inland areas prior to inundation analysis. Figures 3 and 4 are just a few examples shown at a fine scale to illustrate the need for hydrologic connectivity between inland and ocean waters.…”

Section: Hydrologically Disconnected Inland Areasmentioning

confidence: 99%

“…Planners and water resource managers responsible for mitigating associated risks and costs to communities and ecosystems also rely on elevation-based predictions for coastal inundation mapping. Thus, lidar elevation surfaces are critical for modeling the volume of water flow over the topography to determine elevations at risk from coastal inundation [12][13][14][15][16][17]. The accuracy of coastal inundation predictions, however, is dependent upon inundation methods that account for hydrologic connectivity of inland and ocean waters in a highly detailed lidar elevation surface [12][13][14][15].…”

Section: Introduction/backgroundmentioning

confidence: 99%

“…Hydrologic connectivity is achieved with hydrologic (hydro)-enforcement, which simulates overland surface flow in a lidar-based digital elevation model (DEM) in locations that become impounded by elevated features (bridges/roads) that would flood in a given event [9,10,12]. Despite the high-resolution and high-vertical accuracy of lidar elevation surfaces, the detailed topography presents challenges for identifying inundated elevations [9,10,12,13].…”

Section: Introduction/backgroundmentioning

confidence: 99%

“…Despite the high-resolution and high-vertical accuracy of lidar elevation surfaces, the detailed topography presents challenges for identifying inundated elevations [9,10,12,13]. A common problem encountered in lidar DEM hydrological modeling is the presence of elevated structures, such as bridges or roads overlying underground drainage structures (culverts) [9,10,12,13,18,19].…”

Section: Introduction/backgroundmentioning

confidence: 99%

“…These inland areas can become excluded from inundation delineations in a high-resolution, high-accuracy elevation surface because they are not hydrologically connected to ocean waters. The process of achieving hydrologic connectivity in a lidar DEM with hydro-enforcement is not new [9,10,12,13,18], however, the application of hydroenforced lidar elevation surfaces for improved coastal inundation mapping as approached in this research is innovative. Hydrologically-connected lidar elevation surfaces are not always considered in hydrologic analyses, therefore, we evaluated propagated coastal inundation in the southern part of Staten Island, New York; a coastal ecosystem that was severely impacted by Hurricane Sandy in 2012 [23].…”

Section: Introduction/backgroundmentioning

confidence: 99%

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Evaluation of Airborne Lidar Elevation Surfaces for Propagation of Coastal Inundation: The Importance of Hydrologic Connectivity

Poppenga

Worstell

2015

Remote Sensing

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Detailed information about coastal inundation is vital to understanding dynamic and populated areas that are impacted by storm surge and flooding. To understand these natural hazard risks, lidar elevation surfaces are frequently used to model inundation in coastal areas. A single-value surface method is sometimes used to inundate areas in lidar elevation surfaces that are below a specified elevation value. However, such an approach does not take into consideration hydrologic connectivity between elevation grids cells resulting in inland areas that should be hydrologically connected to the ocean, but are not. Because inland areas that should drain to the ocean are hydrologically disconnected by raised features in a lidar elevation surface, simply raising the water level to propagate coastal inundation will lead to inundation uncertainties. We took advantage of this problem to identify hydrologically disconnected inland areas to point out that they should be considered for coastal inundation, and that a lidar-based hydrologic surface should be developed with hydrologic connectivity prior to inundation analysis. The process of achieving hydrologic connectivity with hydrologic-enforcement is not new, however, the application of hydrologically-enforced lidar elevation surfaces for improved coastal inundation mapping as approached in this research is innovative. In this article, we propagated a OPEN ACCESSRemote Sens. 2015, 7 11696 high-resolution lidar elevation surface in coastal Staten Island, New York to demonstrate that inland areas lacking hydrologic connectivity to the ocean could potentially be included in inundation delineations. For inland areas that were hydrologically disconnected, we evaluated if drainage to the ocean was evident, and calculated an area exceeding 11 ha (~0.11 km 2 ) that could be considered in inundation delineations. We also assessed land cover for each inland area to determine the type of physical surfaces that would be potentially impacted if the inland areas were considered as part of a coastal inundation. A visual analysis indicated that developed, medium intensity and palustrine forested wetland land cover types would be impacted for those locations. This article demonstrates that hydrologic connectivity is an important factor to consider when inundating a lidar elevation surface. This information is needed for inundation monitoring and management in sensitive coastal regions.

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Section: Hydrologically Disconnected Inland Areasmentioning

confidence: 99%

Section: Introduction/backgroundmentioning

confidence: 99%

Section: Introduction/backgroundmentioning

confidence: 99%

Section: Introduction/backgroundmentioning

confidence: 99%

Section: Introduction/backgroundmentioning

confidence: 99%

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Evaluation of Airborne Lidar Elevation Surfaces for Propagation of Coastal Inundation: The Importance of Hydrologic Connectivity

Poppenga

Worstell

2015

Remote Sensing

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Are compacted tramlines underestimated features in soil erosion modeling? A catchment‐scale analysis using a process‐based soil erosion model

et al. 2021

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Process‐based model ling has long been used as a well‐suited tool to simulate soil erosion. Despite a large number of scientific articles that emphasize the role of compacted tramlines for soil erosion and surficial nutrient transport, no study exists that integrates these artificial structures into process‐based modelling at catchment scales. Thus, this study aims to quantify the effects of tramline compaction on soil erosion dynamics within a catchment. For this reason, high‐resolution spatial data (1 × 1 m) have been incorporated into the model EROSION 3D, which was used, calibrated, and tested for a soil erosion event with measured discharge and soil loss data. To quantify the contribution of tramlines to soil erosion, two different model parameterizations have been used: the tramline parameterization (TLP) and the common model parameterization (CP) that disregards the tramlines. The results reveal that: (i) the parameterization of tramlines improved model outcomes; (ii) tramlines significantly contribute to overall soil loss and sediment entrance into the channel network; (iii) the bulk density of tramlines is the most important driver of increases in soil erosion and runoff. Moreover, our investigation suggests that the impact of compacted tramlines have long been underestimated in soil erosion modelling and can assist in the assessment of surficial flow path connectivity. Thus, the integration of tramlines into soil erosion modeling is important for the implementation of adequate soil conservation and water protection measures.

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Future flooding of the Volta Delta caused by sea level rise and land subsidence

et al. 2023

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Hydrologic Connectivity: Quantitative Assessments of Hydrologic-Enforced Drainage Structures in an Elevation Model

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 10 publications

References 30 publications

Evaluation of Airborne Lidar Elevation Surfaces for Propagation of Coastal Inundation: The Importance of Hydrologic Connectivity

Evaluation of Airborne Lidar Elevation Surfaces for Propagation of Coastal Inundation: The Importance of Hydrologic Connectivity

Are compacted tramlines underestimated features in soil erosion modeling? A catchment‐scale analysis using a process‐based soil erosion model

Future flooding of the Volta Delta caused by sea level rise and land subsidence

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