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Topography and Slope

 

Lanao del Norte has all the slope categories. A greater portion covering 92,331.06 hectares representing 24.14% of the province’s total land area within the 18-30% slope category. These areas are categorized as moderately sloping to rolling and are considered suitable to agro-forest activities. The 8%-18% slope category comes next with an area of 84,344.61 hectares representing 22.05% of the province’s total land area. The gently sloping to undulating areas (3-8%) have the smallest share which covers 38,748.93 hectares or 10.13% of the provincial area.

 

Table 1. Slope Classification, Lanao del Norte

Classification

Description

Area (Hectares)

% to Total Area

0-3%

Level to very gently sloping 40,092.41

10.48%

3-8%

Gently sloping to undulating 38,748.93

10.13%

8-18%

Moderately sloping to rolling 84,344.61

22.05%

18-30%

Rolling to hilly 92,331.06

24.14%

30-50%

Steep hills to mountainous 51,587.56

13.49%

>50%

Very steep hills to mountainous 75,374.10

19.71%

TOTAL

382,478.66

100%

Source:   GIS-PPDO, LDN, 2007

 

 

In terms of provincial distribution within the region, Lanao del Norte has the largest area within the 8-18% slope which represents 31.59% of the region’s total. It ranks 2nd to Bukidnon in terms of extent within the 18-30 slope category or areas which range from rolling to hilly. The province’s area with slopes greater than 50% or areas which are very steep and mountainous constitute only 10.44% of the regional total.

 

Table 2. Slope Classification by Province, Region X (in hectares)

PROVINCE

0%-3%

3%-8%

8%-18%

18%-30%

30%-50%

>50%

TOTAL

Bukidnon

111,516.00

72,627.00 75,465.00 106,366.00 136,110.00

547,775.00

1,049,859.00

Camiguin 2,362.00 3,759.00 5,382.00 3,744.00 13,940.00

29,187.00

Lanao del Norte*

40,092.41

38,748.93 84,344.61 92,331.06 51,587.56

75,374.10

382,478.66

Misamis Occidental

32,287.00

40,044.00 26,836.00 31,762.00 19,183.00

55,410.00

205,522.00

Misamis Oriental

46,336.00

51,111.00 77,041.00 87,251.00 48,315.00 41,516.00

351,570.00

Total

216,986.84

216,946.38 267,028.64 321,486.37 274,057.86 722,110.57

2,018,616.66

Percent Share of the Province to Region’s Total

18.48%

17.86%

31.59%

28.72%

18.82%

10.44%

18.95%

Source:   RPFP 2004-2030

GIS-PPDO, LDN, 2007

Areas which are highly suitable to agricultural uses and urban development are largely found in low-lying municipalities such as Lala and Kapatagan. Lala has 11,184.88 hectares and Kapatagan has 8,075.28 hectares within 0-3% slope class. A relatively bigger portion of 8-18% slope category which is highly suitable for agri-industrial and agro-forestry development is found in the district of Mandulog and the municipality of Nunungan with areas of 17,680.86 and 12,795.45 hectares, respectively. Largest areas with slopes greater than 50% are also found in the district of Mandulog and Nunungan.

 

Table 3.  Slope Categories by Municipalities, Lanao del Norte

MUNICIPALITY 

0%-3%

3%-8%

8%-18%

18%-30%

30%-50%

> 50%

SUB-TOTAL

Bacolod 7,560.41 744.24 1,670.49 434.86 10,410.00
Balo-i 525.09 465.77 5,144.07 1,754.21 7,889.14
Baroy 179.12 1,364.02 3,843.80 2,543.44 78.91 8,009.29
Iligan City 4,580.43 1,348.77 2,213.14 2,296.92 2,020.18 803.13 13,262.57
Kapatagan 8,075.28 1,519.01 1,770.37 4,099.92 3,303.98 23.02 18,791.57
Kauswagan 1,075.39 1,784.62 1,194.77 860.83 17.04 1,104.95 6,037.60
Kolambugan 1,313.88 1,810.38 3,749.15 2,995.38 1,758.21 1,828.00 13,455.00
Lala 11,184.88 751.32 1,870.81 217.99 14,025.00
Linamon 207.97 1,792.84 317.98 2,318.79
Magsaysay 25.70 1,699.68 5,236.47 1,625.09 3,512.24 12,099.18
Maigo 653.15 2,589.96 3,453.97 2,217.67 1,197.68 2,017.57 12,130.00
Mandulog 1,386.80 157.22 17,680.86 23,059.77 19,716.79 18,952.84 80,954.28
Matungao 3,824.47 701.91 4,526.38
Munai 909.17 7,241.79 4,306.07 1,191.70 7,569.27 21,218.00
Nunungan 831.85 12,795.45 8,453.99 6,186.54 20,357.17 48,625.00
Pantao Ragat 1,546.29 918.28 6,104.32 441.11 9,010.00
Pantar 3.05 1,903.86 1,675.76 885.02 4,467.69
Poona Piagapo 5,028.37 1,331.34 476.64 2,735.70 9,572.05
Salvador 2,246.93 3,928.83 1,231.83 2,799.06 184.54 1,007.81 11,399.00
Sapad 3,750.81 3,243.80 775.27 3,184.27 819.62 2,229.23 14,003.00
SND 2,390.46 401.96 9,438.76 6,702.36 6,121.46 25,055.00
Tagoloan 48.89 60.78 1,152.63 999.57 2,632.40 235.92 5,130.18
Tangkal 1,577.05 6,354.61 1,772.52 2,325.17 12,029.35
Tubod 923.99 4,613.05 2,866.82 5,181.72 800.36 3,674.65 18,060.59
GRAND TOTAL 40,092.41 38,748.93 84,344.61 92,331.06 51,587.56 75,374.10 382,478.66
% Distribution

10.48%

10.13%

22.05%

24.14%

13.49%

19.71%

100%

Source:   Topographic Map, LDN

GIS-PPDO, LDN, 2007