Rapid generation of Digital Elevation Models from topographic maps

The article considers the question of estimating the accuracy of interpolation methods for building digital elevation models using Soviet topographic maps. The territory of the Kursk region of the Russian Federation was used as the study area, because it is located on the Central Russian Upland and characterized by the complex structure of the vertical and horizontal dissection of the relief. Contour lines automatically obtained using a Python algorithm were used as the initial elevation data to build a digital elevation model. Digital elevation models obtained by thirteen different interpolation methods in ArcGIS and Surfer software were built and analyzed. Special attention is paid to the ANUDEM method, which allows to obtain hydrologically correct digital elevation models. Recommendations for the use of one or another method of interpolation are given. The results can be useful for professionals who use topographic maps in their work and deals with the design using digital elevation models.

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Use of Digital Elevation Models to Map Out The Groundwater Resources Base Of Kuje Area to Federal Capital Territory, Abuja, Nigeria

Journal of Applied Sciences and Environmental Management ◽

10.4314/jasem.v25i7.16 ◽

2021 ◽

Vol 25 (7) ◽

pp. 1207-1212

Author(s):

J.O. Mephors ◽

C.O. Ogunmuyiwa ◽

O.S. Afolabi ◽

C.F. Agbor ◽

O.M. Ogoliegbune ◽

...

Keyword(s):

Ground Water ◽

Sea Level ◽

Digital Elevation Models ◽

Groundwater Resources ◽

Research Work ◽

Groundwater Potential ◽

Topographic Maps ◽

Digital Elevation ◽

The Government ◽

Elevation Model

This research work examined the use of digital elevation model in the evaluation of groundwater resources in Kuje Area, Nigeria. This was achieved through the acquisition of topographic maps, Digitization of the topographic maps which were glued and interpolated to generate Digital Elevation Models (DEM) and Mapping of groundwater potential areas using ArcGIS 9.2 and ArcView 3.2a software. Findings from this research show that the study area have elevations ranging from 333 m to 429 m above sea level with a moderate groundwater potential in areas with elevation ranging from 286 m and 333 m above sea level. Some areas also have ground water problem, these areas were classified as mountainous areas and are located at very high elevations. The rocky nature of the high elevated environment makes these areas have very little hope of assessing groundwater. It was suggested that government should properly monitor groundwater, inhabitants should be made to accept laws which will help them in the conservation of ground water resources and efforts should also be made by the government towards creating incentives that will encourage people to obey these laws, Conservation methods such as retardation of surface runoff, control of vegetation and groundwater withdrawal rates should be employed.

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Errors of slope and aspect estimated from digital elevation models derived from1:25,000-scale topographic maps

Japanese Journal of Forest Planning ◽

10.20659/jjfp.48.2_67 ◽

2015 ◽

Vol 48 (2) ◽

pp. 67-74

Author(s):

Satoshi Tatsuhara ◽

Yuta Shogaki

Keyword(s):

Digital Elevation Models ◽

Topographic Maps ◽

Digital Elevation

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Quantifying Uncertainty of Digital Elevation Models Derived from Topographic Maps

Advances in Spatial Data Handling ◽

10.1007/978-3-642-56094-1_30 ◽

2002 ◽

pp. 403-418 ◽

Cited By ~ 25

Author(s):

Qihao Weng

Keyword(s):

Digital Elevation Models ◽

Topographic Maps ◽

Digital Elevation ◽

Quantifying Uncertainty

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Assessment of digital elevation models to obtain morphometric characteristics in relief transition region

Ambiente e Agua - An Interdisciplinary Journal of Applied Science ◽

10.4136/ambi-agua.2280 ◽

2019 ◽

Vol 14 (1) ◽

pp. 1

Author(s):

Kevin Nunes Ficher ◽

Donizete Dos Reis Pereira ◽

Josiane Silva Oliveira ◽

André Quintão de Almeida ◽

Eduardo Morgan Uliana

Keyword(s):

Digital Elevation Models ◽

Original Data ◽

Drainage Area ◽

Topographic Maps ◽

Transitional Region ◽

Morphometric Characteristics ◽

Main River ◽

Digital Elevation ◽

Morphometric Characterization

The purpose of this study was to evaluate the performance of Digital Elevation Models (DEMs) in the morphometric characterization of a basin located in a transitional region between the São Francisco Plateau, São Francisco Depression and Espinhaço Range reliefs. For the study, four DEMs were generated by interpolation of the SRTM data and topographic maps, using the Topo To Raster interpolator with and without mapped hydrography support, available in ArcGIS® 9.3 software. Another DEM was obtained from the SRTM original data. From the generated DEMs, the morphometric characteristics of the basin were determined and compared to those obtained from topographic maps, denominated reference (REF), by means of percentage errors. The evaluation was also performed in a qualitative way, comparing the drainage and the basin delineations. In general, the DEMs obtained with the support of the mapped hydrography (SRTM-TRH and CT-TRH) provided the best results, with small errors, mainly for the main morphometric characteristics of the basin, drainage area and main river length, which ranged from 0.38 to 1.12% and 5.28 to 7.07%, respectively. On the other hand, the DEMs generated without the support of the mapped hydrography (SRTM-O, SRTM-TR and CT-TR) presented major errors mainly in determining the drainage area and length of the main river, which varied from 18.1 to 26.6% and 26.7 to 34.4%, respectively. These occurred due to a deviation of the main river in the São Franciscana Depression region, which allows us to conclude on the necessity and importance of evaluating DEMs before their use.

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