Pennar, Penner, Penneru or North Pinākinī
Map showing the river.
|State||Andhra Pradesh, Karnataka|
|District||Kolar, Tumkur, Anantpur district, Kadapa and Nellore|
|Cities||Hindupur, Ananthapur, Proddatur, Kadapa, Nellore|
|- location||Chikkaballapur district, Nandi Hills, Karnataka, India,|
|Mouth||Bay of Bengal|
|Nellore, Utukuru, Andhra Pradesh, India,|
|0 m (0 ft)|
|Length||597 km (371 mi)|
|Basin size||55,213 km2 (21,318 sq mi)|
|- location||Nellore (1965–1979 average), max (1991)|
|- average||200.4 m3/s (7,080 cu ft/s)|
|- minimum||0 m3/s (0 cu ft/s)|
|- maximum||1,876 m3/s (66,300 cu ft/s)|
|- left||Jayamangali, Kunderu, Sagileru|
|- right||Chitravati, Papagni, Cheyyeru|
The Penna (also known as Pennar, Penner, Penneru or North Pinākinī) is a river of southern India. The Penna rises in Nandi Hills in Chikballapur District of Karnataka state, and runs north and east through the states of Karnataka and Andhra Pradesh to empty into the Bay of Bengal. It is 597 kilometres (371 mi) long, with a drainage basin covering 55,213 km2: 6,937 km2 in Karnataka and 48,276 km2 in Andhra Pradesh. The river basin lies in the rain shadow region of Eastern Ghats and receives 500 mm average rainfall annually.
The name of the river Penneru (alternatively Penner) is derived from Telugu words penu పెను meaning grand and yeru ఏఱు / యేఱు meaning river, stream, or a rivulet or else from neeru నీరు water, in flow of course. It also called as Utthara Pinakini in Karnataka. The name Pinakini refers to Pinaka bow of the Nandhiswara, the presiding deity of the Nandi hills at the origin of the river.
The Penna river has several sources and mouths. The main stream starts in Nandi Hills in of Karnataka, flows for 597km in north and east directions through several mountains and plains, and joins the Bay of Bengal in Nellore district of Andhra Pradesh. The river is seasonal. The main source of the water is from rains. It appears like small stream during dry periods. The major tributaries of the Penna are the Jayamangali, Kunderu and Sagileru from the north, and Chitravathi, Papagni and Cheyyeru from the south. 
The Penna river rises at Chikkaballapur in Chennakesava Range of Nandi Hills in Karnataka. It starts in north west direction at its source. It flows near the towns like Maralur. It flows for 48km towards north through the Kolar and Tumkur districts in Karnataka before entering Andhra Pradesh in Anantpur district.at 11km southwest of
At 69km, the Penna meets the Kumudavati river. At 82km, the Penna meets the Jayamangali river near the Hindupur town in Anantapur district. The Jayamangali river rises in Tumkur district and traverses 77km in northeast direction before joining the Penna river on the left bank. The Penna flows almost northwards for the next 146km from the confluence of Jayamangali.
After traversing for 67km in Anantapur district, the Penna reenters Karnataka at Pavagada Taluk in Tumkur district at 115km from its source. After traversing for 13km in Tumkur district again, it reenters Andhra Pradesh in Kalyandurg Taluk in Anantapur district at 128km from its source. The Penna turns east at Penna Ahobilam and flows through Marutia and katrimala reserve forests and near the towns like Tadipatri.
The Penna gains the volume but loses stream by the time it crosses Palakondalu and enters Cuddapah district of Andhra Pradesh. It regains the stream in district after meeting many tributaries including Chitravati, Bahuda, Papagni, Kunderu, Sagileru and Cheyyeru and flows near the towns like Kodur, Jammalamadugu, Proddatur, Kamalapuram and Siddhavattam.
The Penna meets its major tributary Chitravati at Gandalur near the Gandikota at 336km from its source. The Chitravati rises near the Chikballapur town in the Kolar district of Karnataka and traverses 218km in northeast direction in Kolar, Anantapur and Cuddapah districts before joining the Penna on the right bank. The Penna river forces through Gandikota gorge and flows east through a gap in the Eastern Ghats to go to the plains of Coastal Andhra.
The rivers Papagni and Kunderu meets the Penna near Kamalapuram. The Papagni river rises near Sidlaghatta town in Kolar district of Karnataka and traverses 205km before joining the Penna on the right bank. The Kunderu river rises in Kurnool district of Andra Pradesh and travels 205km before joining the Penna on the left bank.
The Penna river continues in southeastern direction and cuts across the Nallamala hills. The river meets sagileru and turns east. The Sagileru rises in Prakasam district and flows south to meet the Penna. The Penna river meets Cheyyeru at Boyanapalli and Gundlamada near the Sidhout on the right bank. The Cheyyeru river is formed by the confluence of the rivers Bahuda and Puncha that originate in the Chittoor district of Andhra Pradesh. The two streams join at Rayavaram and flows towards north for 87km before joining the Penna.
The Penna emerges from Velikonda Range in Eastern Ghats at 467km from its source and enters the Somasila plains in the Nellore district. The Pennar river flows near the towns like Atmakuru, Kovur, Jonnawada, Sangam and Nellore.
It meets two minor tributaries, the Boggeru and the Biraperu near the Sangam town. The Boggeru rises in Boggu Venkatapuram and joins other minor streams before meeting the Penna river. The Biraperu is a small stream to carry off the rainfall of the north east portion of Nellore, Udayagiri and Kavali Mandals to the Penna river.
It finally joins the Bay of Bengal atnear Utukuru at 597km from its source.
The watershed of the Penna and its tributaries covers part of the southern Deccan plateau, including most of the Rayalaseema region of Andhra Pradesh and part of Karnataka. The Kolar Plateau forms the divide between the Penna watershed and those of the Kaveri, Ponnaiyar, and Palar rivers to the south. The Penna drains the northern portion of the plateau, which includes parts of Kolar and Tumkur districts in Karnataka. The Krishna River and its tributaries drain the Deccan plateau to the west and north of the Penna's watershed, and the low Erramala hills forms the northern divide of the Penna basin. The upper watershed of the Penna includes Cuddapah District, central and eastern Anantapur District, the southern part of Kurnool District, northwestern Chittoor District.
The estuary of the Penna river extends 7 km upstream from the Bay of Bengal. Tidal influence and salt water extends further upstream during the November to June dry season. Coastal dunes as high as 7 meters form around the river mouth. Upputeru tidal creek, 15 km in length, and Isakapalli lagoon, separated from the Bay of Bengal by the Isakapalli barrier island, 180 m long and up to 3 m high, form the main coastal wetlands.
The Penna basin has a dry tropical monsoon climate. The upper basin of the Penna is semi-arid, with summer temperatures of 25–46 °C and winter temperatures of 18–28 °C. Most of the rainfall is provided by the moisture-bearing southwest monsoon, which provides rain to most of India between June and September. The Penna basin lies in the rain shadow of the high Western Ghats ranges, which prevents much moisture from reaching the region. Post-monsoon cyclonic storms in the coastal region produce additional rain during September and October. The winter northeast monsoon, which provides rain between December and March, provides little rain to the upper basin and slightly more to the lower basin. It varies greatly from year to year in south India, sometimes bringing powerful cyclonic storms with flooding and high winds. The mean annual rainfall is 550 mm/year in Anantapur, and 900 mm/year in Nellore. The Penna basin suffered from a prolonged drought in the 1990s, which caused much misery among the regions farmers and generated political demands to build an aqueduct to bring water from the Krishna River to Rayalaseema.
The upper basin was formerly covered by tropical dry forest, thorn forest, and xeric shrublands. Most of the dry tropical forest has now disappeared, due to clearance for grazing and overharvesting the forests for timber and firewood, replaced by thorny shrublands. The remnant forests of the Deccan are largely deciduous, dropping their leaves in the dry winter and spring months. The East Deccan dry evergreen forests of Coastal Andhra were evergreen, but these forests have largely been reduced to tiny remnant pockets.
The small boat port of Krishnapatnam used to lie on Upputeru creek, and has now been developed into a deep-water port. Buckingham Canal, a navigable man-made waterway that runs just behind the coast, allows small boats from the Penna to get to Chennai in the south and the Krishna River delta to the north. Currently as in November 2015 Krishnapatnam Port is a major port situated at a distance of 24 km from Nellore city. Krishnapatnam is one of the very few ports in the world now which can handle giant ships with load capacities of 1,50,000 tonnes. It has become one of the deepest port of India with 18 meters of draft.
Telugu literature has flourished in the Penna basin which produced several well-known authors and poets like Kavibrahma Tikkana Somayajulu, Molla, Rallapalli Anantha Krishna Sharma, Vidvan Vishvam, and C. Ramakrishna Reddy. Vidhwan Viswam's penneti paata which means "a song of River Penna" is very popular in Andhra Pradesh and in Raayala Seema in particular, it is a topic of study in graduation course Telugu language paper . Ramakrishna Reddy's "penneti kathalu" represented the tragic and cultural life of the people of Penna valley. These stories are credited to be the best of their kind with the accent of local language presented effectively.
Water use potential
The average annual water yield in river is nearly 6.316 billion cubic meters. All the water sources in the river basin are fully harnessed by constructing nearly 5 billion cubic meters capacity water storage reservoirs. Ground water is also extensively harnessed in the river basin beyond the long term sustainability.
The predominant rain fall is during North East Monsoon season whereas it is in South West monsoon in the adjoining Krishna river basin. This basin is situated geographically at lower elevation compared to the surrounding Krishna river basin. This feature facilitates water transfer from the adjoining Krishna basin. Water can be transferred from the adjoining Krishna basin into Penna basin up to 600 m MSL elevation with moderate water pumping (less than 100 m head). The river basin has extensive rain fed agriculture lands and good water storage sites for its all around development provided Krishna river water is imported to the basin. The monsoon flood waters of Krishna river during South West Monsoon months can be transferred for direct use in Penna basin without the need for water storage.
The Penna basin water apportionment is governed by colonial time water sharing agreement in the year 1892 and the Interstate River Water Disputes Act 1956. However the future development of Penna basin depends on Interstate water sharing agreements of Krishna river. Tungabhadra Dam which is located in Karnataka and a joint project of Andhra Pradesh and Karnataka, is the only gate way to transfer water from Krishna river to the uplands of Penna basin up to 600 m MSL. The low lands of Penna basin can be supplied with Krishna river from the Srisailam dam up to 250 m MSL. The outcome of ongoing Krishna Water Disputes Tribunal – II is very crucial for the future of Penna river basin.
- Kumar, Rakesh; Singh, R.D.; Sharma, K.D. (2005-09-10). "Water Resources of India" (PDF). Current Science. Bangalore: Current Science Association. 89 (5): 794–811. Retrieved 2013-10-13.
- Garg, Santosh Kumar (1999). International and interstate river water disputes. Laxmi Publications. pp. 7–8. ISBN 978-81-7008-068-8. Retrieved 16 May 2011.
- Sharad K. Jain, Pushpendra K. Agarwal, Vijay P. Singh (1873). Hydrology and Water Resources of India. The Netherlands: Springer. p. 727-740.
- "Penna river basin status report, 2014" (PDF). WRIS, India. Retrieved 13 June 2015.
- "Freight Shipping,Cargo Services,Seaport in India - Krishnapatnam Port". www.krishnapatnam.com.
- Raayala Seema Mukhachitram published by Seema Sahithi
- 1892 Agreement - pages 279 to 293
- "Interstate River Water Disputes Act - Water And The Environment - Water And Politics". Scribd.
- "BLUE PRINT FOR GODAVARI RIVER WATER UTILIZATION IN ANDHRA PRADESH - Hydroelectricity - Liquids". Scribd.
- "Review of KWDT II Final Report - Environment - Bodies Of Water". Scribd.
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- Chisholm, Hugh, ed. (1911). "Pennar". Encyclopædia Britannica. 21 (11th ed.). Cambridge University Press. p. 104.